sentences:  Two years later, one of his children, Joseph, Jr., was found dead in an abandoned construction building, two weeks after Kallinger took out a large life insurance policy on his sons.Though Kallinger claimed that Joseph, Jr. had run away from home, the insurance company, suspecting foul play, refused to pay out the claim.Beginning in July 1974, Kallinger and his 12-year-old son Michael went on a crime spree spanning Philadelphia, Baltimore, and New Jersey.