Yeah. See, there's these objects that are basically puzzles. They're hard as fuck to get - the item wants you to be obsessed with it to the point you'd kill someone to get it. I used to work Sex Crimes and now I'm Homicide, so I have a strong stomach for these things, but some of the shit Spencer pulled to get the puzzle box... Anyway, if you're depraved enough to find it, Hell figures you're one of its own.
So if you activate the object - open the puzzle box, spin the carousel, untie the rope puzzle - you go to Hell. Some people just stay damned, but Spenser was changed. I don't know why, but he's like some sort of demonic Army recruiter? That's all I know. But yeah, he was human, once. British Army in WWI. The war made him depraved.