They jumped into his lime green 1977 Bedford CF van and hit the road. But Michelle never made it home, and Stephen didn't get to the snow. After August 25, 1978, they were never seen again. In 2005 an inquest found the pair died, but how or when remains a mystery to this day. In January of this year, the case was referred to the State Crime Command's Homicide Squad, and a formal review was conducted. A re-investigation was launched which involved a two-day search in the Ku-Ring-Gai National Park in June for vehicle parts after a tip-off. These parts were found but were not linked to the couple.