Larry Nassar is attacked by angry parent; A gang member, a snitch and the F.B.I. collide; Defendant curses out judge; Murderer taunts mother of two teenage son; Singing for a lenient sentence; Prisoner meets his baby in courtroom.

A father lunges at a serial killer, a defendant attempts to stab an attorney, and an officer tasers an Alaskan wildlife enthusiast. Later, a daughter yells at her father's killer, a man threatens a female judge; a defendant walks out of his trial.

The brutal murder of a successful hair salon owner and mother upends a tight-knit Chicago community. While neighbors whisper about the killer's identity, detectives must break down walls of silence and uncover the plot to slay this local icon.

Police must unmask a pair of kidnappers before an heiress's time runs out.

A housewife's day spirals into horror when her stepdaughter disappears.

Detectives in Montgomery, AL, go on a cross-country trek for a killer.

Police officers in Connecticut uncover a triple homicide on Thanksgiving.

In Deland, FL, a death in the family turns out to be more than suicide.

A young woman's dreams are cut short when she disappears after a night out.

A respected mother of three vanishes in Colorado, but she has a secret.

Amy St. Laurent vanishes while out on a date with an out-of-town friend.

A woman hitches a ride to a truck stop and disappears.

A high-school senior disappears after dropping off his best friend.

Maura Murray goes missing after her car swerves off the road.

A man disappears after discovering that his girlfriend is cheating on him.

A college student disappears after leaving her son with a childhood friend.