"The FBI Files" reveals the crime-busting techniques and forensic science used by the FBI to solve the most baffling cases. Hosted by former head of the FBI's New York Office James Kallstrom.

The FBI Files

S4, EP5 "Vanished"

An unusual ransom note gives authorities clues about a wealthy woman's disappearance.

The FBI Files

S3, EP8 "Terror in Disguise"

FBI agents track masked bandits during a violent four-year crime spree.

The FBI Files

S4, EP14 "Without Remorse"

A parole officer's shooting death sends police on a manhunt full of murders, robberies and car jackings.

The FBI Files

S1, EP1 "Polly Klaas: Kidnapped"

How the FBI used forensic evidence to confirm the presence of a suspect in the bedroom of 1993 kidnapping victim Polly Klaas.

The FBI Files

S2, EP19 "22 Caliber Killer"

A sniper targets black men.

The FBI Files

S1, EP4 "Death in Alaska"

A killer's cleanliness leaves evidence of his participation in the sexual assaults and murders of a woman and her two daughters.

The FBI Files

S2, EP6 "A Hunter's Game"

A serial killer taunts and hunts his victims before shooting them down.

The FBI Files

S3, EP3 "The First and Kennedy Street Crew"

Street gang members kill two FBI agents and a detective in Washington, D.C.

The FBI Files

S2, EP11 "Family Secrets"

Evidence points to an ex-girlfriend in the deaths of a man's new wife and son.

The FBI Files

S4, EP3 "Small Town Terror"

Agents link the disappearance of two people with an elderly couple's murder.

The FBI Files

S3, EP9 "Deadly Business"

While investigating a gas station mogul, agents uncover an operation stamped with mob brutality, kidnapping and retaliatory killings.

The FBI Files

S3, EP15 "Manhunt"

A convicted murderer escapes from prison after vowing to kill the FBI agents who helped to prosecute him.

The FBI Files

S5, EP5 "A Family Torn"

When the body of a missing 11-year-old girl washes up on a sandbar, the police take a closer look at her uncle's conflicting stories.

The FBI Files

S3, EP7 "Millionaire Murder"

A businessman disappears after meeting a mystery woman in West Palm Beach, Fla., to make a once-in-a-lifetime deal before his retirement.

The FBI Files

S2, EP12 "Killer Abroad"

In Vienna, Austria, investigators search for a sadistic killer who is beating prostitutes and strangling them with their own clothing.

The FBI Files

S4, EP4 "Deadly Heist"

The FBI searches for a missing armored van after a money shipment fails to arrive at its destination.

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