|Use||give it to Gregory on two separate occasions|
|Location||Catherine's Room, later Storeroom|
|Inventory||Gregory's secret book of dirty photos. Don't let the kids see it!|
After you first give it to Gregory, it can be retrieved from where he hid it in the Storeroom. From here, it is part of the puzzle to steal Angel/Devil Dog's soul. It must be taken from the Storeroom and given to Gregory shortly before he enters the Lounge at 6:30 PM, where Angel Dog is waiting for him. Doing so will cause Gregory to run off to rehide it in the same place, causing him to forget about cleaning the Lounge.
In episode 10 of The Bloody Karte, Gregory is seen reading an adult magazine in his room. It is speculated that this is the source of of the Dirty Book in the game. Like in the game, he tries to hide its presence from the others, especially James and Gregory Mama.
- The magazine is called 'Erotic Night'.