
Eagle-eyed technical experts prove there is no such thing as a perfect crime as they assemble the pieces every criminal leaves behind. Dramatic crime re-creations and, sometimes, part of the investigations are a staple of the series. Some of the re-creations include alternate versions of the crimes, which are disproved by science. The show's episodes follow each case from the initial investigation until it reaches its legal resolution.

Detectives discover new clues left by a stalker's letter to his victim.

A mother and her two young daughters are found brutally murdered and sexually violated; the crime scene has no shortage of evidence, but investigators cannot find a conclusive link to their prime suspect.

The body of an insurance assessor is found in a river in Tampa, Fla.; a unique murder weapon and blatant clues lead the police straight to her careless killer.

When a policeman's home burns to the ground, he later arrests a man who confesses to arson, but the confession seems dubious.