Exhibit A: Secrets of Forensic Science

A fisherman, trawling off the English coast, comes upon what appears to be a large fish in his net. But it turns out to be a dead body. The body is wearing shoes and a Rolex watch, but has no I.D. - is it murder or suicide? So begins the Albert Walker case - the story of a man who was wanted for embezzlement in Canada, fled to England, then killed a man so that he could steal his identity. This episode recounts one of the strangest, most intriguing cases of mistaken identities in the recent history of crime.