
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 man is murdered in his sleep but no fingerprints are anywhere to be found; a shoe impression outside could lead to the killer.
The murder of 53-year-old Paul Gruber is examined, and the evidence points to Darryl Robin Kuehl, who was later convicted of the crime.
Three seemingly unrelated deaths proved to be serial murders; the killer had been careful, he used poison which had no taste or odour; fortunately for investigators, it also has a unique chemical signature.
A murder in Australia baffles police, until they find a device intended to save lives is the only witness to the man's death.