so laura, philippe santos and terence williams, they disappeared three months apart, about 20 years ago, was it that they had in common? >> one deputy one deputy who had contact with them, both men had been pulled over and never seen or heard from again after they were in the back of those squad cars? this is one of the most riveting compelling, and heartbreaking, and frustrating stories i've ever investigated this is a mother turns way was his mother has been trying for 20 years to get some answer, some some resolve, some sense of justice for her son who has now been presumed dead. it's been over 20 years. he's a father who who was bowled over in a cemetery was then identified by an officer who never reported it, >> never really followed up, only to say that he dropped him off at his job. well, no one ever heard from him again, can you imagine what this has been like? we traveled down to naples, florida. it's tried to understand what happened here and the connection for the other gentleman, philippe santos's three months before this, the mother of terrence williams realize and searchin