In this screen adaptation of Fay Weldon's novel, The Life and Loves of a She-Devil, Susan Seidelman has transformed a black comic masterpiece into a watered-down, dim-witted vehicle for TV sitcom star Roseanne Barr. Phenomenally successful hack-romance novelist Mary Fisher (Meryl Streep) sets her sights on accountant Bob Patchett (Ed Begley, Jr.), who more