S3, E10: 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.