Jean Casey was the wife of garage owner Tom Casey and mother of Mark. Jean knew the trade well enough to manage her husband's businesses when he wasn't around, primarily Casey's Autos in Weatherfield. In 1989, after Brian Tilsley's death Tom bought over Tilsley's Garage and sent their 19-year-old son Mark to work there as a mechanic, learning the ropes from Kevin Webster. Like her husband, Jean knew that Mark would skive given the chance and occasionally looked in on the garage to make sure the men were hard at work - although they invariably weren't.