On November 18, 1993 friends of Eileen and Derek Severs called and notified the police that the couple had been missing for several days. The police searched the Severs' home and questioned their son Roger who had recently moved in with his parents. Although the bodies had not yet been found, police arrested and detained Roger on suspicion of murdering his parents. Only after finding blood samples in Eileen's car and careful analysis of the mud flaps on Derek's car, were the police able to determine where Roger had buried his parents. Roger had used his mother's car to discard incriminating evidence and used his father's car to transport the bodies to the burial site.