Killer Instinct with Chris Hansen - Season 1 (2015)

The mysterious disappearance of a mother and her three daughters leads detectives to a cool-blooded killer with serious issues.

When an elderly Vietnam veteran is found murdered in his Seattle retirement community, detectives expose a crime ring led by a gypsy con-woman and killer.

When police turn up a headless corpse, a teenage killer turns against his friend and sends him to trial for first-degree murder.

A convicted killer reveals his reasons for kidnapping an elderly woman, parading her around as a "prize" and tossing her into a river to die.

Police can't make sense of a woman's murder until Sheila Davalloo stabs her husband, exposing the roots of a twisted love triangle.

A longtime friendship show signs of a serious cracks when a man's wife and young son suffer a tragic fall off a 200-foot cliff.

When police arrive at Matthew Hoffman's home, they find mysterious piles of dead leaves -- and a kidnapped girl who's still alive in the basement.