The third one was the guilty man... he was the one who saw it all, and did nothing... he drank too much, and that destroyed his life, starting with the love of his life leaving him. His life would only get worse, though... one fateful night, he did a favor for a friend, but allowed his addiction to get control. he was late dropping off the kids, and when he was driving, he lost control, crashed, and was the only one who survived. he could have confessed to his friend, but instead, he buried them in the forest, disposed of their belongings except for the rabbit doll, and went home. he finally couldn't take it, and told his now furious friend. he lied about the rabbit, but nothing else. but he was never alone in his lonely house, and he kept seeing the kids, until he decided to move the doll to the restaurant... he saw them all die... and did nothing...
