
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 a woman goes missing from her home, police focus on her husband when an airline luggage tag and luminol point to an affair and murder; footage from a TV crew and Coast Guard photographs lead investigators to the suspect's missing boat.

Teenager is found half-naked with her throat slit; a single foreign hair found on her thumb may finger the killer.

Handwriting and simple doodles complicate a car-bomb case and an alleged self-defense shooting in a peaceful British farming village as police uncover a husband's plot to kill his wife for insurance money.

A bullet-riddled car, a missing driver, and no witnesses, an ambush or a random attack; the clue was something so tiny, it was measured in millionths of a meter.