
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.

An abandoned, still-running car leads investigators to a body with unusual marks and a DNA trail that lead to the killer.

Evidence reveals a teacher who complained of being stalked and harassed by another teacher was scamming police.

A seemingly model citizen turns out to be a serial killer.

A man arrested for the sexual assault and attempted murder of a boy in a European country becomes linked to a murder in Zurich, Switzerland, through analysis of microorganisms.