If you've never been good at anything in your life, why would murder be any different? Patrick has always had a somewhat combative relationship with his little sister Marilyn, but when she brings home her new sci-fi soap star fiancé Ryan, it's all out war. When Patrick fails to drive a wedge between the happy couple, he reaches for sharper instruments.
Mortimer Brewster, a newspaper drama critic, playwright, and author known for his diatribes against marriage, suddenly falls in love and gets married; but when he makes a quick trip home to tell his two maiden aunts, he finds out his aunts' hobby - killing lonely old men and burying them in the cellar!