
Behind the scenes of major case investigations.

The FBI searches for a man who sneaks up on police officers in patrol cars and opens fire.

A sniper targets black men.

When a 14-year-old runaway is found dead in an Illinois barn, agents track down a trucker who might be responsible for her death and dozens more.

The police call in the FBI when they suspect that a woman's former lover is responsible for her disappearance, but they can't find a body or murder weapon.