
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 chip of stainless steel brings a killer to justice 20 years after a woman's body is found in a ravine.

A woman identifies her husband as her attacker, but questions arise 16 years later regarding her recollections.

Officials probe the death of a woman investigating the possible side effects of the drug she was prescribed for bipolar disorder.

A mother and her two young daughters are found brutally murdered and sexually violated; the crime scene has no shortage of evidence, but investigators cannot find a conclusive link to their prime suspect.