Watch Karl Karlsen's story on ABC News' "20/20" On Friday, Oct. 25, 2013 at 10 p.m. ET
In 2008, Levi Karlsen, 23, was crushed to death when the truck he was working on slipped off its jack and landed on top of him. His death was initially ruled an accident, but Karlsen collected a $700,000 life insurance payout after the incident, raising suspicions. Ref. Source 8