
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.

Two people witness a truck driving over an unconscious man and flee into a nearby bar, but when the police turn up, the truck, the man and the witnesses are gone.

When a woman dies in a horseback riding accident, police uncover a web of lies in her husband's background after his suspicious behavior prompts a closer look.

Police believe they have a serial rapist and murderer, but DNA testing and research leads to another arrest and conviction.

When a farmer's wife disappears, the tests of a plant pathologist and a dendrochronologist lead to a surprising revelation.