
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 news anchor is shot to death outside her home in an apparent crime of passion by a fan; a police dog tracks the scent of the killer back to the crime scene.
Police find fragments of deleted computer files leading them to suspect a woman's suicide is really murder.
A suspicious neighbor gives police a break in a cold case.
An Alaskan trooper finds a woman's body beside a frozen road, but evidence is scant even after a suspected murder weapon is found.