Last Days is a mystery-horror hybrid novel about a murder that may or may not have happened in a cult of self- mutilating monks—the idea is that the more you amputate, the closer you get to God. The detective, addled from a recent case gone horribly wrong, must keep cutting off his own body parts in order to learn the truth. This isn't just a creep-fest (Brian Evenson's spare, musical prose is more Edgar Allan Poe than Saw), it's a memorably atmospheric novel that mates Raymond Chandler with The Texas Chainsaw Massacre. (Elliott Bay Book Company, 101 S Main St, 624-6600. 7:30 pm, free.)