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

1. Polly Klaas: Kidnapped

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Real FBI cases are recounted through reenactments and interviews with law enforcement and forensic scientists.

The FBI Files

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Real FBI cases are recounted through reenactments and interviews with law enforcement&peri

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The investigation into the rape and murder of 23-year old Robin Bishop on a Californian highway in 1982.

2. Above the Law

A man who hunted and killed outdoorsmen is caught when the FBI receives a tip leading to the murder weapon.

3. Human Prey

The cleanliness of a killer that led to evidence in sexual assault and murder of woman and her daughters.

4. Death in Alaska

After an 11-year search, one of the killers in the murder of a vacationing couple is arrested on the high seas.

5. Deadly Paradise

The FBI investigates Vincent Gigante who feigned mental illness to avoid prosecution and then incarceration.

6. The Crazy Don

Florida Police investigate a serial killer in 1984 with evidence that links the victims and the killer.

7. Killing Spree

Police and FBI agents investigate Caleb Hughes who abducted and murdered missing 5 year old Melissa Brannen.

8. Melissa Brannen: Missing

This episode profiles The Unabomber who maimed and murdered people with mail bombs for two decades.

9. The Unabomber

The FBI launched a full scale manhunt for mountain man Claude Dallas after he killed two game wardens.

10. Murdering Cowboy

The FBI investigates the 1993 truck bombing of the World Trade Center.

11. Melissa Brannen: Missing

The FBI's investigation of the 1993 truck bombing led to the conviction of all terrorists in less than three years.

12. The World Trade Center Bombing

FBI agents obtain recordings of Gotti discussing his criminal enterprise and murders.