Mask of the Other is a well written and engaging story dealing with the aspects of the Cthulhu mythos in a modern setting. As with a lot of mythos fiction there is some examination of the price that is paid for power and if you have read and enjoyed any of the Delta Green fiction then this is probably going to be your kind of thing. I thought the characters and the organisations where presented in a convincing way and the supernatural elements were dealt with well, both in terms of reinterpreting the mythos and as stand alone descriptions of alien (in the broad sense) creatures. I'd recommend the book to pretty much anybody who likes modern horror.
[5 of 5 Stars!]