but kaye robinson's will to survive was too great. >> i still had a life to live.ife back. and i was going to take it back a piece at a time. >> eskridge left valuable dna evidence behind. more reliable than any eyewitness. a decade after the crime, mark eskridge went on trial for the sexual assault and attempted murder of kaye robinson. he was convicted and sentenced to life in prison plus 20 years. authorities cite the case as a reason to be skeptical of eyewitness identifications, especially when the witness is under extreme duress. >> you have an eyewitness identification which is as certain as certain can be, but you have science and dna evidence telling you otherwise. >> doug desilva's bizarre behavior and his equally bizarre resemblance to the actual attacker almost landed him in jail. doug desilva's whereabouts are unknown even to his ex-wife. >> it's still very, very strange and very puzzling as to why doug desilva had ever gotten involved in the case. why he introduced himself into the case. >> you always know somebody's going to get caught or you're goin