Police discover that a teenage girl, found brutally stabbed to death in her car, was involved in a shocking love triangle.

Police discover that a teenage girl, found brutally stabbed to death in her car, was involved in a shocking love triangle.

A task force in Abbotsford, B.C. hunts a deadly stalker who killed one teenage girl and left another barely alive.

A task force in Abbotsford, B.C. hunts a deadly stalker who killed one teenage girl and left another barely alive.

Residents of East Point, Georgia are terrorized by a series of seemingly random shootings.

Residents of East Point, Georgia are terrorized by a series of seemingly random shootings.

After the brutal murders of two elderly women, police hunt for scanty forensic evidence.

After the brutal murders of two elderly women, police hunt for scanty forensic evidence.

Phoenix police are faced with a unique serial killer team who get their thrills stalking and shooting innocent people at night.

Phoenix police are faced with a unique serial killer team who get their thrills stalking and shooting innocent people at night.

To solve the murder of a Texas playboy, police dig deep into the heart of Millionaire's Row.

To solve the murder of a Texas playboy, police dig deep into the heart of Millionaire's Row.