
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.
Police are able to create a composite sketch of a man burnt beyond recognition. But tracking the killer is more challenging.
Police use DNA profiles of seed pods from a truck to catch a killer.
A woman is stabbed a hundred times and her body positioned in a suggestive manner. This could be a hate crime against women.
Police believe they have a serial rapist and murderer, but DNA testing and research leads to another arrest and conviction.