On the day his trial was scheduled to begin, Karl Karlsen finally admitted to murdering his son five years ago to collect on a life insurance policy. Prior to his guilty plea, Karlsen had vehemently denied any wrongdoing.In 2008, the 53-year-old caused his son, Levi Karlsen then 23 years old, to be crushed to death under a pickup truck in Seneca County, New York. The fatal incident happened a mere 17 days after Karlsen took out a life insurance policy on his son. Following the death, he collected $707,210.

For more tales of insurance fraud: 5 notorious, homicidal tales of life insurance fraud.

This case, which has been featured on TV shows such as “Nightline,” “Good Morning America” and “20/20,” is sparking new questions into the death of Karlsen’s first wife.