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 body, and we just need to know why -- why you stabbed him. >> i didn't stab him. >> if raymond leiker's foot was caught in the net, he would have went down with that boat, okay? >> did you murder him? >> no. >> did you murder him? >> no. >> well, then i don't have to lock you up. but i want to know what happened. >> i'm trying to tell you, that's the best that i can --