Die, Mommie, Die! (2003)

Retired singing star, Angela Arden, heads a dysfunctional family. Her husband, filmmaker Sol Sussman, hates her and has a kissy relationship with his nubile daughter, Edith. Angela carries on an affair with Tony Parker, a lounge lizard, who sleeps with both Edith and her brother, Lance, but not before Angela plots to murder Sol when he cuts off her allowance. Bootsie Carp, the family maid loyal to Sol, is on to Angela, but the diva works quickly and poisons Sol. Edith suspects foul play and wants Lance's help in proving mom's guilt. Lance, who loves his mother deeply, is conflicted. Will Edith succeed? Does love lurk somewhere? And what about Angela's long dead sister, Barbara?