>> you're 36 inches from a human being, you can't tell it's your wife. no room is completely dark. there will be a light from every room. it may not be enough. it's enough to tell the shape. owes you wouldn't have fired. you obviously saw something because you fired the gun. >> lars insisted he thought there was intruders in the house and he and debbie were in danger. >> i thought there was somebody else in the house going down the hallway the other direction. i thought there was one coming at me this way. that's what i think. >> what made you happen it happened because your dark growled? >> yes, sir, he never growls. he barks. >> there was no witness or apparent evidence to contradict him. after an hour of questioning, police once again let lars go. six days later, he said his final good-bye to debbie. her parents by his side. >> how was lars at the funeral? >> very composed. very reserved.