A passenger's death in a car accident seems cut and dry -- until police notice the stab wounds; all eyes are on the driver; the brutalized body of a disabled man sends police on the heels of a woman who seemingly thirsts for torture.

A man sobs tearlessly as he recounts finding his girlfriend and her mother murdered at home, but his act doesn't sit right with detectives; an arrogant man relives the day a routine visit results in three deaths.