
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 husband and wife get shot, and their 16-year-old daughter manages to escape, but investigators suspect she may be involved in the murder.

A rare gun and a victim's beloved dog help investigators trying to solve a multi-year-long murder case where most of the witnesses were admitted drug users.

After 10 years, a witness decides to do the right thing about the rape and murder of a young hairdresser.

An 11-year-old girl is sexually assaulted and shot twice at close range.