
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 murder in Australia baffles police, until they find a device intended to save lives is the only witness to the man's death.
Volunteers and police spend weeks searching for a missing girl. A psychic later leads them to a field where the body was found.
DNA profiling reveals clues leading to a killer's identity 20 years later.
When DNA proves that a man who practically admits to a brutal attack is innocent, police wonder why he is willing to take the blame.