
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 killer leaves equally incriminating evidence at the scene when he meticulously wipes away his fingerprint and shoe impressions.

Police don't have a basis for comparison to match shoe impressions, blood drops and DNA evidence from a murder scene.

A mother is determined to discover what happened when her daughter is injured in a hit-and-run accident.

A masked gunman kills two members of a family and wounds two others after they interrupt his burglary at their upscale suburban home.