
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.
Physical evidence initially condemns a prime suspect to a double homicide, but DNA from a discarded spoon points to another.
A young girl falls ill and dies; forensic investigators search for evidence halfway around the world to shed light on the tragic death.
Two bodies are discovered, shot to death in their car; the car windows are broken, but there's no sign of shattered glass.
Key suspect has a solid alibi in the murder of a war veteran; but police get a lead by finding a new suspect with a sweet tooth.