The Library - Final Puzzle

The first time I played I got to the last puzzle in the library and was then able to access the final book, The
Creature. I have since played it again and now there is no final puzzle, I'm curious about why this might be.
Any ideas anyone? Love this game by the way and looking foward to Azada 3.

Have you gone to the safe in the downstairs area. I think the combination is magic book. you have to open the safe to play the final book.

I wondered about this too. But gave up. I thought there may be a bonus room, but couldn't find it.

when you back up away from the books, there is a picture on the left of the screen, click on it, don't go upstairs. The safe is behind the picture,I am pretty sure. Been a few weeks since I played. I also love this game, no 3 should be out soon. good luck

Yes, the portrait is the key to The Creature, Thanks.