Lisa Leona Maas drove her 1975 Plymouth Fury down long laneway of a Woodford farm house on July 17, 1988 and was never seen again.

Maas was five months pregnant and had just moved home to her parent’s house. She had separated from her husband, Terry Maas, six months earlier, and had what was described as a raucous fight with her boyfriend, Ron Valliere, the night before her disappearance.

Maas left and met two female and one male friend at a downtown Owen Sound bar. The four left the bar together in Maas’s car and headed to the male friend’s rented farmhouse. Mass left her car parked there and the group piled into the male friend’s car to attend a house party in Woodford.

Maas and the male friend returned to his home so she could pick up her car. She left there around 4:30 am, turning left out of the driveway, away from the village of Annan.

Two days later, her car was found stuck in the mud on a secluded country road with the trunk and doors wide open. Several personal documents were found a few kms. east of her car, but no trace of Maas.

Police originally had seven suspects and conducted over 165 interviews, but no one has ever been charged with her disappearance.

The province of Ontario is offering a $50,000 reward for information leading to an arrest and conviction in the Lisa Maas case.