The adventure is interesting and fun, but I can't understand why it lacks the map of Castle Avernus. That map is not optional in this adventure, it is very important! So I'm disappointed to find in this pdf a partial product, without an essential element. This error is the only thing that makes me rate the product low. But is so disappointing I feel a little be tricked as a customer.

The map of castle Avernus is not included. An there isn't an alternative.

From the Shadows is a classic adventure and this is a very nice OCR scan of the module. However, the Castle Avernus maps critical to the adventure are not included.

You can find somewhat usable Avernus maps over at: http://www.fraternityofshadows.com/GryphonHill/darkon/avernus.html