Andy's monologue at the end to a horrified and tearful Sylvia was born from two sources, one fictional and the other real. The former was a storyline from Alan Moore's WATCHMEN comic book series where the Rohrsach character describes his discovery of a murdered kidnapped girl and his subsequent murder of her assailant. The latter was derived from David Milch asking retired NYPD Det. Bill Clark what was the worst thing he'd ever seen while he was a cop and Milch detailing a similar story.