Episode 73 of "Crossing Jordan"
s04e15 It Happened One Night

Nigel has to give a presentation to the American Medical Examiner's Association introducing the latest cutting edge methods. He introduces the trace evidence concentrator. The machine will be used in hopes of eliminating toe tags and cataloging all deceased bodies by bar code. Jordan learns that monster Kevin Cahill is out for revenge against Jordan's father. Max tells Jordan the reason the monster is out of prison is because of a cop killing case Max was working on 30 years ago. They later charged Cahill with murder. He was in prison for 30 years and is killing off those that put him in prison. Nigel discovers a flaw in his trace evidence concentrator. When to grieving parents come to look to the body of their deceased daughter they discover their daughters cause of death is messed up.