Wilson plays a passive Pacific Northwest serial killer (his method involves poisoning) who tries to settle into normalcy in a small town.  "I feel normal now," he says after finding a room and a job.  We see him befriend his new landlords (Brian Cox and Mercedes Ruehl), his employer at -- OOPS -- the post office, and even win the heart of his puppy doggish co-worker played by Janeane Garafolo. 

Promoted to mail carrier, Wilson "picks up clues about the lives inside"  by the smells outside.  Getting familiar with the town at large, he breaks one of his cardinal rules.  He begins poisoning people he knows.  Putting Sheryl Crow as a junkie out of her misery earlier in the film wasn't enough to sate his urge -- "The urge that erases the path that's traveled. 

In a humorous scene, like a dope fiend who will help you try and find the drugs he just stole from you, Wilson  goes on a search posse for one of his victims with the townspeople he prays with on Sunday.  He says, "I look so hard, I forget there's nothing to find."  If you don't look too hard for deep meaning in this one, composer Marco Beltrami's melancholy score might move you to the film's rather satisfying conclusion.