Sandy sleeping separately, prosecutors believe david slipped into sandy's perform shortly before dawn and used the pistol he kept in the closet. the blood spatter on david's shirt and under his right sleeve proved he was the shooter. david left the gun on the bed, then called 911. >> she shot herself in the head. >> she must have had some inkling that he was going to be doing something and here is the guy who thought he was smart enough to get away with it. if not for the second shot. >> after he was arrested, david duyst continued to tell anyone who would listen that he was innocent. he claim...