Narrow Results
 Follow Your Favorites!
NotificationsSign in to get custom notifications of new products!







GenreAuthor
Horror   Remove Search Term
R   Remove Search Term
Advanced Search >

 Featured Product
Write Great Fiction - Description & Setting
by F+W Media

For a story to be successful, it must come alive on the page.

With Description & Setting, you will learn how to make every detail count as you create believable people, places and events.

Write Great Fiction - Description & Setting
 
 Hottest Horror, R
 
 Newest Titles in This Section
Products found in this section... Sort by: 
 Title    Publisher    Price  
Littlest Lovecraft: The Call of Cthulhu

Littlest Lovecraft: The Call of Cthulhu


Littlest Lovecraft retells H. P. Lovecraft's classic tale of cosmic horror The Call of Cthulhu in this fully illustrated adaptation. When Thurston receives a mysterious box from his late grand-uncle, it leads to a terrible obsession. Follow his quest to learn the truth about strange statues, crazed cultists, and the great and monstrous Cthulhu. Note: This book is landscape! The download includes...   [click here for more]
Esoteric Order of Publishing  $4.95 $3.95

Add to DriveThruFiction.com Order  
Littlest Lovecraft: The Dunwich Horror

Littlest Lovecraft: The Dunwich Horror (audio product)


Littlest Lovecraft retells H.P. Lovecraft’s tale of unspeakable dread, The Dunwich Horror, in this fully illustrated adaptation. Follow the strange and peculiar Whateleys of Dunwich as they try to unleash otherworldly horrors on the unsuspecting Miskatonic Valley. Note: This book is landscape! The download includes a 4x3 ratio PDF, a wide format PDF, a wide format Mobi file for Kindle (designed...   [click here for more]
Esoteric Order of Publishing  $5.95

Add to DriveThruFiction.com Order  
Three Shades of Night

Three Shades of Night


Shadows Run Deep There is a taint in Chicago, a barely suppressed shiver of horror that touches all who make their home in the city. In this collection of three connected novellas, vampire, werewolves and mages all pursue their visions of power. Each novella tells part of the story of the hidden monsters of the Windy City. A World of Darkness® Novel Author...   [click here for more]
White Wolf  $4.00 $2.76

Add to DriveThruFiction.com Order  
Vampire Diary: The Embrace

Vampire Diary: The Embrace


In the shadows of Los Angeles, an ancient vampire courtws Austin Jacobson, a nightclub bartender. Slowly by surely, Austin succumbs to the dark call. Can he resist the Embrace, the gateway to an eternity of damnation? And will his master's dark command threaten the most beautiful most perfect love he has ever felt? ...   [click here for more]
White Wolf  $8.99 $6.20

Add to DriveThruFiction.com Order  
Wendigo Tales: Weird Wars: With Utmost Dispatch

Wendigo Tales: Weird Wars: With Utmost Dispatch


A Tale of Weird Wars Rome Legionary Titus Aetius is tasked with hunting down a deserter, his best friend of a decade and fellow soldier. But Titus isn’t the only hunter stalking the dark forests of Gaul. The deserter’s trail disappears in a blood-soaked and empty village. Torn between honor and loyalty, Titus must find some way to outwit his officers, save his friend, and survive whatever...   [click here for more]
Pinnacle Entertainment  $2.99 $2.06

Add to DriveThruFiction.com Order  
Blood Feud: The Saga of Pandora Zwieback, Book 1

Blood Feud: The Saga of Pandora Zwieback, Book 1


The thrilling debut of a dark-urban-fantasy novel series, by the bestselling author of X-Men: The Chaos Engine Trilogy and Final Destination: Dead Man's Hand! Sixteen-year-old Goth girl Pandora Zwieback has a major problem: she's just discovered that her New York City hometown is the stalking ground for every monster and ghoul out to raise a little hell (literally!)...BUT she's...   [click here for more]
Starwarp Concepts  $14.95 $2.99

Add to DriveThruFiction.com Order  
The Kolchak Papers: The Original Novels

The Kolchak Papers: The Original Novels


Carl Kolchak is born... In 1972, Jeff Rice's novel - The Night Stalker - introduced Carl Kolchak to the world. This spine-tingling novel of supernatural terror became a delayed best seller and served as the basis for the film of the same name, starring Daren McGavin and adapted by legendary Twilight Zone screenwriter Richard Matheson. After The Night Stalker became one of the...   [click here for more]
Moonstone  $4.99

Add to DriveThruFiction.com Order  
The Spooky Chronicles: Forget Me Nots

The Spooky Chronicles: Forget Me Nots


There’s something sinister about Chesterfield Mansion, and “Spooky” Spencer Lawson can’t wait to find out why. Locked inside on a stormy night, Spooky and his fellow fifth graders are tasked to find thirteen skeleton keys before the stroke of midnight, but their host and his trusted minions are secretly watching for one of those children… the one who won’t be missed....   [click here for more]
Thinking Skull   FREE 

Buy Now  
You have reached a page with Adult Content filtered from view. If you wish to view this content, you must log in and modify your account information Starwarp Concepts   
Clan Novel 8: Ravnos

Clan Novel 8: Ravnos


enter knave, smiling Khalil Ravana has always been a lightweight, a drifter,a thief with no status and no power... until now. Chance saved him from a storm in Calcutta that annihilated his clan, and now chance has placed him in hte center of another storm - this one in New York City, near the deadly Kindred battles for possession of the Eastern United States. It's also ground zero for Leopold, a...   [click here for more]
White Wolf  $3.59 $2.48

Add to DriveThruFiction.com Order  
Book of the Kindred

Book of the Kindred


BOOK OF THE KINDRED is the sourcebook for VAMPIRE: THE MASQUERADE, created by Mark Rein-Hagen, co producer of TV's KINDRED: THE EMBRACED. It tells the tale of the Kindred from the legends of ancient times to the harsh realities of modern nights. It investigates mysteries and reveals secrets that...   [click here for more]
White Wolf  $4.99 $3.44

Add to DriveThruFiction.com Order  
The Werewolf Hunter #1

The Werewolf Hunter #1


THEY'RE ALL THAT STAND BETWEEN US AND THE HORRORS OF THE NIGHT In The Werewolf Hunter #1, NUELOW Games proudly presents the beginning of a new ongoing anthology series starring nasty monsters and their tireless foes occult experts Armand Broussard and Lady Satan. In our premiere issue, we offer up two illustrated adventures starring Professor Broussard, the Werewolf Hunter...   [click here for more]
NUELOW Games  $2.25 $1.55

Add to DriveThruFiction.com Order  
Obsessed

Obsessed


Available in EPUB, MOBI, PDB and PDF. I kill, therefore I am… Voices slam through the corridor of his wounded mind. The words of his dead sister cry out. His parents' taunts fill the silent room where he sits and waits--waits for the murderous rage, filling him with strength, driving him to kill, to touch the cold flesh, taste the warm blood--to feel alive again… A witness...   [click here for more]
Untreed Reads Publishing  $2.99 $2.06

Add to DriveThruFiction.com Order  
The Saga of Pandora Zwieback #0

The Saga of Pandora Zwieback #0


Introducing 16-year-old Goth adventuress Pandora Zwieback! Pan is a girl with the ability to see the monsters that regular humans can’t, and with the help of her mentor, 400-year-old monster hunter Sebastienne “Annie” Mazarin, she’s going to protect the world from danger. This special comic-book introduction to the Saga of Pandora Zwieback novel series is hosted by...   [click here for more]
Starwarp Concepts   FREE 

Buy Now  
Blood Sacrifice

Blood Sacrifice


Available in PDF, PDB, EPUB, MOBI and HTML What would you give up for immortal life and love? By day, Elise draws and paints, spilling out the horrific visions of her tortured mind. By night, she walks the streets, selling her body to the highest bidder. And then they come into her life: a trio of impossibly beautiful vampires: Terence, Maria, and Edward. When they encounter Elise, they set an...   [click here for more]
Untreed Reads Publishing  $2.99 $2.06

Add to DriveThruFiction.com Order  
Joined at the Muse

Joined at the Muse


Joined at the Muse is a collection of thirteen stories, novelettes, and novellas featuring author David Niall Wilson in collaboration with some of the finest talents in genre fiction. There is horror, dark fantasy, fantasy, and science fiction represented. Two of the stories, those with John B. Rosenman and Stephen Mark Rainey, are previously unpublished. Contents include:...   [click here for more]
Macabre Ink Digital  $7.50 $5.99

Add to DriveThruFiction.com Order  
Write Great Fiction - Description & Setting

Write Great Fiction - Description & Setting


For a story to be successful, it must come alive on the page. With Description & Setting, you will learn how to make every detail count as you create believable people, places and events. This valuable reference: Shows you how to master the challenging - and often overlooked - subjects of description and setting Offers hands-on action-and-results excercises that allow you to...   [click here for more]
F+W Media  $16.99 $9.99

Add to DriveThruFiction.com Order  
The Spooky Chronicles: The Crooked Man

The Spooky Chronicles: The Crooked Man


First book in the series. Moments after a child on his death bed passes away, he is visited by a mysterious “crooked man” who sends him back to the land of the living. Upon returning, the young boy realizes that his mother was taken in his place, but that’s only the beginning of the Crooked Man’s sinister plan. Meet Spooky, a dead little boy continuing to...   [click here for more]
Thinking Skull  $1.99

Add to DriveThruFiction.com Order  
Darker Than Noir

Darker Than Noir


When a mundane mystery needs solving, you call a private detective. But when the mystery involves ghosts, demons, zombies, monsters, mystical serial killers, and a host of other supernatural elements, you call the detectives in this collection. They'll venture into the darkness and hopefully come back out alive. Just remember, they get paid expenses up front, and what they uncover, you might not like....   [click here for more]
Grand Mal Press  $14.99 $2.99

Add to DriveThruFiction.com Order  
Female Force: Anne Rice

Female Force: Anne Rice


Anne Rice's uniquely gothic, sensuous, and existential approach redefined the modern vampire mythology. Shaped by personal tragedies, critical successes and failures, and a fervent rediscovery of her Catholic roots, Rice has penned over 27 novels from the supernatural to historical tomes, erotica and religious themes. But Anne Rice's life is just as interesting as the tales she spins. Note:...   [click here for more]
TidalWave Productions  $1.99 $1.37

Add to DriveThruFiction.com Order  
Female Force: Bestsellers

Female Force: Bestsellers


See the collected life stories of JK Rowling, Stephenie Meyer, Anne Rice, and Charlaine Harris in this broad examination of strong women that have made a difference in today's literature. Note: Intended for readers 12+. ...   [click here for more]
TidalWave Productions  $5.99 $4.13

Add to DriveThruFiction.com Order  
You have reached a page with Adult Content filtered from view. If you wish to view this content, you must log in and modify your account information T. Rico   
The Saga of Pandora Zwieback Annual #1

The Saga of Pandora Zwieback Annual #1


It's monster-hunting Goth adventuress Pandora Zwieback's first full-length comic book adventure! Chasing monsters in New York is strenuous work, and Pan tries to get her chaotic life back in order by joining her boyfriend, Javier Maldonado, at one of his family's Central Park picnics. But relaxation is hard to find when she runs into trouble with an overprotective, holy-water-wielding aunt who’s...   [click here for more]
Starwarp Concepts  $3.99

Add to DriveThruFiction.com Order  
You have reached a page with Adult Content filtered from view. If you wish to view this content, you must log in and modify your account information Pulp Mill Press   
Deadworld: Voices from the Deadworld

Deadworld: Voices from the Deadworld


A great introduction to the classic long running comic horror series Deadworld! A chronicle of the Deadworld as told by the various characters who experience the horror of a supernatural holocaust unleashed upon the Earth. Each entry has an illustrated single scene accompanied by a narration of the character that ties in directly with that point in time. Featuring incredible artwork from 48 different...   [click here for more]
Caliber Comics  $8.99 $6.20

Add to DriveThruFiction.com Order  
Rain of Ash (Project Fifteen Book One)

Rain of Ash (Project Fifteen Book One)


Three years ago, after a terrible fight with her father, Lydia Bradshaw vanished without a trace. Her younger sister Gwen never gives up hope, though, waiting for Lydia to eventually come home. But when Lydia finally does resurface, it's not what Gwen expected. Lydia's changed in her time away, in ways Gwen can barely understand. After her family home burns, Gwen gets taken in by a cadre of vampire...   [click here for more]
Stolen Fire  $2.99

Add to DriveThruFiction.com Order  
Blood Reign: The Saga of Pandora Zwieback, Book 2

Blood Reign: The Saga of Pandora Zwieback, Book 2


The highly anticipated second novel in the Saga of Pandora Zwieback series, by the bestselling author of X-Men: The Chaos Engine Trilogy! She was stabbed in the heart with an ancient mystical spear and died. Her mother was kidnapped by a band of vampires led by a fallen angel—their goal: unleashing hell on earth. And every living creature on the planet faces extinction...   [click here for more]
Starwarp Concepts  $14.95 $2.99

Add to DriveThruFiction.com Order  
Author Pack [BUNDLE]

Author Pack [BUNDLE]


This bundle contains the titles below, in the formats listed by each. FAME Neil Gaiman Regular price: $1.99 Bundle price: $0.91 Format: Watermarked PDF Neil Gaiman started out humbly in the so-called British Invasion of comics in the 1980s, writing rock and roll biographies, but soon leaped into the vanguard with his revolutionary...   [click here for more]
TidalWave Productions  $21.90 $10.00

Add to DriveThruFiction.com Order  
Littlest Lovecraft: The Shadow Over Innsmouth

Littlest Lovecraft: The Shadow Over Innsmouth


Littlest Lovecraft retells H.P. Lovecraft’s transcendent tale of unfathomable fear, The Shadow Over Innsmouth, in this fully illustrated adaptation. A seemingly harmless road trip goes terribly awry when our intrepid narrator travels to the strange town of Innsmouth. What hidden horrors await him when he learns far too much for his own good? Note: This book is landscape! The download includes...   [click here for more]
Esoteric Order of Publishing  $4.95

Add to DriveThruFiction.com Order  
The Mysteries of Udolpho

The Mysteries of Udolpho


When young Emily goes on a long journey with her father to study and appreciate the machinations of nature, they come home to find her father dying. After his death, Emily is almost forced into a marriage by her forced consort Count Morano when her heart has fallen for the young count Valancourt but strange things are happening around the castle she is to inherit. ...   [click here for more]
Solace Games  $29.99 $2.99

Add to DriveThruFiction.com Order  
Littlest Lovecraft: The Horror Collection

Littlest Lovecraft: The Horror Collection


Littlest Lovecraft retells three of H.P. Lovecraft’s spooky short stories, Pickman’s Model, The Haunter of the Dark, and The Whisperer in Darkness, in this fully illustrated adaptation. Explore a mad painter’s gallery, uncover a sleepy town’s dark secret, and expose the horrors that lurk in the woods and beyond. Note: This book is landscape! The download includes a 4x3 ratio...   [click here for more]
Esoteric Order of Publishing  $4.95

Add to DriveThruFiction.com Order  
The God of Alpha

The God of Alpha


Forget what you know about werewolves; forget what you know about vampires because what you know about them is entirely false. Michael Gilliganson is an African-American young boy living in a small Georgia town in the late 1920s, unaware that the town he lived in his entire life bore a 2,000 year old secret. After befriending a girl who can transform into a werewolf by using a powerful device...   [click here for more]
Raleigh Daniels Jr  $1.99

Add to DriveThruFiction.com Order  
Desperate Journeys

Desperate Journeys


Desperate Journeys holds six short stories from Ryan Macklin: Cracks in Marble, where a gargoyle made to protect humans falls in love with one What a Mother Will Do, set in a distant future where refugees struggle for survival in their exodus Stories from Finis: A Book of Endings, humorous tales told in a "choose your own adventure" fashion These...   [click here for more]
Ryan Macklin  $2.49

Add to DriveThruFiction.com Order  
Ergo Sum: Five Unorthodox Explorations

Ergo Sum: Five Unorthodox Explorations


Ergo Sum is sold PWUW (Pay What yoU Want), DRM-free and CC-licensed in order to ensuring total freedom for the consumer. Specifically, we are releasing this book under the CC BY-SA International 4.0 license (https://creativecommons.org/licenses/by-sa/4.0/). We wrote this book to tell a few stories, and we care more about that than turning a quick buck. We just hope you enjoy, and continue...   [click here for more]
Y. Rice Publications  Pay What You Want

Add to DriveThruFiction.com Order  
Authorials: 8 Chess Boards

Authorials: 8 Chess Boards


Have an eReader? Want to play a game against your friends? Then start your collection of Authorials the Collectable Ebook Game with 8 Chess Boards! Chess is a game almost as old as stories. When you saw this spy thriller on the shelves from that great author, you purchased it hoping for insight. Instead, it gave you entertainment. The story was about Amos Rook hunting for the 8 chess sets played...   [click here for more]
AnSR Games  $1.99

Add to DriveThruFiction.com Order  
Authorials: Thinking Cat

Authorials: Thinking Cat


Have an eReader? Want to play a game against your friends? Then start your collection of Authorials the Collectable Ebook Game with 8 Chess Boards! This book caused the first stir amongst Authorials. Almost all great ones know its story first hand. Catherine was a voracious book reader. So much so, that she reviewed books on her blog, ThinkingCatBlog.com, The Thinking Cat. Then, one day, she...   [click here for more]
AnSR Games  $1.99

Add to DriveThruFiction.com Order  
The Return of Dr. Fu Manchu

The Return of Dr. Fu Manchu


At the twilight of the British Empire, Dr. Fu Manchu again comes up against Nayland Smith, the one man who can stop his sinister plans to destroy the Western world and remake it in the glorious image of the East, with Fu Manchu as absolute ruler. First appearing in Sax Rohmer's short story "The Zayat Kiss," the oriental super-villain went on to appear in 14 books between 1913 and 1973....   [click here for more]
Wildside Press  $0.99

Add to DriveThruFiction.com Order  
Apex Magazine -- Issue 21

Apex Magazine -- Issue 21


Get your dark science fiction and fantasy short story fix at Apex Magazine. New issue released on the first Monday of every month! Fiction: "Close Your Eyes" by Cat Rambo "Langknech and Tzi-Tzi in the Land of the Mad" by Forrest Aguirre "A Raggy Dog, a Shaggy Dog" by Nalo Hopkinson Poetry: "House of Shadows" by F.J. Bergmann "The Witch's Heart"...   [click here for more]
Apex Book Company  $1.99

Add to DriveThruFiction.com Order  
Mental Shrillness

Mental Shrillness


The Mental Shrillness ward will shock with six twist ending horror tales: Memorial Day Descent - experience a showdown between an old mansion and a soldier's painful, recurring war memories. A first place story contest winner. Pains in the Glass - Tim and Wanda love each other but neither sees the cracks in their flawed marriage looking glass. Today is the day one learns of betrayal...   [click here for more]
Todd Russell  $7.99 $1.99

Add to DriveThruFiction.com Order  
Penance

Penance


Available in EPUB, MOBI, PDB and PDF formats. Bound by misery. Marked by sin. Set free by death. Barely into their teens, without homes, they dwell in neon shadows, the violent eddies of urban America. They trade their innocence for money, abuse their hopes, and then a monster comes... A monster without fangs or claws, but more deadly. Because of them, he has lost everything: his wife,...   [click here for more]
Untreed Reads Publishing  $0.49 $0.34

Add to DriveThruFiction.com Order  
Bakerloo Line Train

Bakerloo Line Train


Available in EPUB, HTML, PDF, PDB and MOBI formats. John wants to turn his life around, and that starts with a marriage proposal to his girlfriend. All that's standing between him and this act is a simple journey on the London Underground. Except that this journey will be anything but simple. Strange old ladies, apathetic passengers, a nervous Asian man and a deepening sense of unease are all obstacles...   [click here for more]
Untreed Reads Publishing  $0.99 $0.68

Add to DriveThruFiction.com Order  
Dante's Girl (A Kayla Steele Novel, Book 1)

Dante's Girl (A Kayla Steele Novel, Book 1)


Kayla Steele is a girl with a problem. First of all, she’s trying to hold down her job at the perfume counter of a large department store, whilst staying on top of her pile of mounting bills. As if that wasn’t enough, she’s also on a mission to learn the Dark Arts so that she can avenge the death of her boyfriend and bring down the cabal of supernatural entities that is stalking the...   [click here for more]
Rebellion Publishing Ltd  $5.99 $4.13

Add to DriveThruFiction.com Order  
Angel of Death: A Novel of Suspense

Angel of Death: A Novel of Suspense


"He calls himself ""Thanatos"" (""Death""). But Clyde Daschner is actually the worst serial killer of the twentieth century, a man who admits to having murdered over 750 innocent victims--through shooting, stabbing, bombing, poisoning, and terrorism. He regards himself as an ""Artist of Death,"" a man who's creating a virtual world peopled with the digital analogs of the men, women, and children he's...   [click here for more]
Wildside Press  $2.99

Add to DriveThruFiction.com Order  
The Craig Kennedy Scientific Detective Megapack: 25 Classic Tales of Detection

The Craig Kennedy Scientific Detective Megapack: 25 Classic Tales of Detection


The Craig Kennedy Scientific Detective Megapack collects 25 novels and stories. 14 are Craig Kennedy tales, plus there is 1 additional story from the same author and 10 by contemporaries of Arthur B. Reeve. They all share the same spirit of detection. Included are: INTRODUCTION: ABOUT ARTHUR B. REEVE AND HIS CRAIG KENNEDY STORIES THE SILENT BULLET, by Arthur B. Reeve THE WAR TERROR, by Arthur...   [click here for more]
Wildside Press  $0.99

Add to DriveThruFiction.com Order  
The Dog Megapack: 25 Curly Canine Tales, Old and New

The Dog Megapack: 25 Curly Canine Tales, Old and New


"Almost everyone likes dogs, even those who prefer cats as pets. So it's not surprising that writers have devoted a great deal of verbiage indeed to describe their ongoing love affair with the canine breed. You'll find herein all kinds of tales focusing on dogs: science fiction stories, mysteries, horror tales, westerns, memoirs, humorous accounts, and first-person doggie narratives. There are well-known...   [click here for more]
Wildside Press  $0.99

Add to DriveThruFiction.com Order  
The Last Angel

The Last Angel


An angel is found murdered on the streets of Sunset Boulevard. To the media gossip mongers, it’s the biggest story ever. To the Hunters, an underground monster-fighting hit-squad, it’s just another case of whodunnit. To Kayla Steele, their youngest and newest member, it means a last, desperate chance to bring her murdered fiancé back from the dead, and to others with a far darker...   [click here for more]
Rebellion Publishing Ltd  $6.99 $4.82

Add to DriveThruFiction.com Order  
Biohell

Biohell


The City: an entire planet teeming with corruption, guns, sex, and designer drugs. Humans are upgraded by the injection of microscopic nanobots, courtesy of new technology from the Nano-Tek corporation, but when this highly desirable technology heads onto the black market, millions of people inject themselves with pirated biomods—and transform into zombies. Now they roam the streets, out for...   [click here for more]
Rebellion Publishing Ltd  $6.99 $4.82

Add to DriveThruFiction.com Order  
The Sea-Story Megapack: 30 Classic Nautical Works

The Sea-Story Megapack: 30 Classic Nautical Works


The Sea-Story Megapack presents 30 classic nautical tales, plus a bonus poem, ranging from pure adventure to science fiction, from the depths of the ocean to exotic ports of call. Included are: THE SHIP THAT SAW A GHOST, by Frank Norris GHOST LANTERNS, by Alan B. LeMay THE DANGER FROM THE DEEP, by Ralph Milne Farley THE EXTRAORDINARY ADVENTURE OF A CHIEF MATE, by W. Clark Russell THE DERELICT, by...   [click here for more]
Wildside Press  $0.99

Add to DriveThruFiction.com Order  
Regicide

Regicide


Carl meets Annie Risk and falls for her. Hurt by a recent relationship, she resists becoming involved. A chance find offers distraction. Carl stumbles across part of a map to an unknown town. He becomes convinced it represents the city of his dreams, where ice skaters turn quintuple loops and trumpeters hit impossibly high notes... where Annie Risk will agree to see him again. But if he ever finds...   [click here for more]
Rebellion Publishing Ltd  $3.99 $2.75

Add to DriveThruFiction.com Order  
Blood Kin

Blood Kin


A dark Southern Gothic vision of ghosts, witchcraft, secret powers, snake-handling, kudzu, Melungeons, and the Great Depression. Michael Gibson has returned to the quiet home of his forebears and now takes care of his grandmother Sadie – old and sickly, but with an important story to tell about growing up poor and Melungeon (a mixed race group of mysterious origins) in the 1930s, while bedeviled...   [click here for more]
Rebellion Publishing Ltd  $6.99 $4.82

Add to DriveThruFiction.com Order  
Displaying 1 to 50 (of 63 items) Result Pages:  1  2  [Next >>] 
Select Page Number