and that's where they were on raymond leiker. >> and the coroner found evidence of blunt-force traumao the head. tinky leiker's death was ruled a homicide. >> someone killed raymond leiker. alvin latham was the only one on the boat that we know of. his own self said he was the only one. >> when the coast guard interviewed alvin just after his rescue, he said nothing about tinky being stabbed or struck in the head. so police asked alvin to come to headquarters and explain the discrepancies. >> so we started him en route to the jail and he says, well, you all found the body? and i said, yeah, we did. and he says, well, i guess i'm in trouble. >> investigators videotaped the interrogation. >> alvin latham's original story when we first picked him up, he said the captain was caught in the trawler net, the boat was sinking, and he swam off of the boat and watched it go down. >> he was under water. and i started swimming off for the first platform i could get to. >> police informed alvin latham that the story he told didn't match the forensic evidence. >> he had several stab marks on his bo