I had already completed the Serpent Temple when I got the quest to retrieve the scroll of Trickery, but I don't have it on me! So I'm back in the temple wandering around, and can't even find the wizard's lair again to see if the scroll magically appeared there. I'm just tired of wandering, so does anyone have a description of how to get there, or some screen shots to share??

The Scroll of Trickery is in the Wizard's room above the Library. I believe the Library is in the NW part of the level, but can't remember for sure.

Another time I played the game, the Scroll was in the room with the High Priestess.

I got the scroll from the secret room above the library.