
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.

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

Police search every apartment building in town when the body of a young girl found on an isolated farm holds a set of keys but no ID.

A handsome young doctor's fiancée experiences severe illness after revealing that she is pregnant, and launches her own investigation to determine if the doctor is somehow responsible.

A man denies killing a pedestrian in hit-and-run, claiming he sold the car in question; authorities track down the car to find critical evidence.