believable. what we didn't expect was what happened a few months later when this british detective spoke to steve rosenfield and offered to write virginia's governor, adding his support to robert davis' clemency petition, a petition now waiting on the desk of a new governor. coming up -- >> i believe that the confession is an unreliable confession. >> strong words from the chief of police and from the governor's office. the wait begins. when "dateline" continues. from y heartworm disease. the threat is everywhere. and it only takes one mosquito bite to transmit it. that's why you need to protect your dog with heartgard plus. just one real beef chew given once a month, every month, helps keep your dog safe all year long. test dogs for infection prior to use. in rare cases digestive and neurological side effects have been reported. for more information contact your vet. get your dog out of hiding. ask your vet about heartgard plus. the vet's # 1 choice