
Behind the scenes of major case investigations.

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

The extreme efforts taken to convict highway patrolman George Gwaltney of rape and murder.

A man who hunted outdoorsmen, killing them with a high-powered rifle, is caught when the FBI receives a tip leading to the murder weapon.

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