After a pair of serial killers are arrested for causing a traffic accident, the police confiscate some videotapes. These tapes contain brutal murders and tortures that show human wickedness, their background, paraphilia, and the psyche of these murderers. Juarez, trackes down the tapes, one by one to piece together the horrific crimes of the two killers, only to show them, they are in a deeper pool then they believed to be.