The contrast of the demonic and the mundane is so well executed and the little character details everyone gets brings them all to life and gives so much game to play with.
Everything fits really nicely together - an NPC's missing item shows up in the hands of another, everyone is either sleeping with, pining after, or (often justifiably) resentful of someone else in the office, and all the prisoners have some clear reason why the players might want to collaborate with them. The map is great - the use of colour nicely reinforces the contrast between the drab office and the demonic cast that inhabits it.
Really good, really fun interpretation of the title, a unique entry that stands out by doing something unexpected and really committing to it. Also it's funny! Thats' good, we like that.