
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.

When detectives find a mismatched button in relation to a woman's death, they know they can follow the clue back to the killer.

A young girl beaten after watching her grandmother killed, identifies the wrong person; years later she tries to change her statement.

A woman heads home after church, but never makes it there alive, triggering a homicide investigation.

A murder in Australia baffles police, until they find a device intended to save lives is the only witness to the man's death.