Phoebe Cates plays the Baby Sister in this made-for-TV melodrama. A sexually promiscuous college dropout, Cates moves into the home of older sister Pamela Bellwood. Ted Wass, Bellwood's husband, welcomes Cates with open arms...and that's the whole trouble. The original title of this pulpish endeavor was Tainted Love. Baby Sister was first broadcast March 6, 1983.