
Behind the scenes of major case investigations.

The Unabomber eluded the FBI for 18 years until agents received a tip from Ted Kaczynski's brother, David.

A man is convicted of abducting a 5-year-old from a Christmas party based on microscopic evidence found in his vehicle.

When the World Trade Center parking garage explosion resulted in six deaths, the FBI traced the bombers' vehicle to a U-Haul dealership.

A determined team tracked the flamboyant crime boss John Gotti, who assumed control of the Gambino crime family in 1985.