
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.

In a small South Carolina town in 1991, 17-year-old Crystal Faye Todd, a popular high school student, is raped, murdered and dumped in a deserted field; with few leads, authorities test the DNA of several friends, and one match shocks everyone.

A quiet residential community, shattered by the murder of a neighbor. See how modern techniques helped investigators catch the culprit in less than 12 hours.

In a groundbreaking case using animal DNA, investigators use forensic testing on a cat to help them solve the case of a woman who vanished from her home on Prince Edward Island.

When a pipe bomb rips through a rural home, killing a young man and seriously injuring his mother, detectives hope that the remnants of a mailing label will lead them to a killer.