VALERIE'S FAMILY S3E01 Movin' On Airdate: September 21, 1987 The third season opens with a new title and a new series regular. Sandy Duncan plays Sandy Hogan, Michael's sister, who moves in six months after Valerie's death. At home Sandy finds her school-counseling job a breeze compared with what she faces at home: David tries to be a "supermom", while Willie and Mark are at odds over a science project. | Valerie/Valerie's Family/The Hogan Family