 Mr. Bowers booby-traps his basement, electrocuting his wife when she turns on an overhead bulb. Next, the bullet-headed widower ties the knot with mousy heiress Maggie (Jeanette Nolan). While Edie warbles "when the lights start lighting the town," Maggie s controlling older sister drives to Mother s in her Model T, to employ Peter Gunn to investigate Bowers. Gunn detects he s an ex-con blackmailer, but the new bride doesn t fret, though her pince-nezed attorney James Bond warns her she ll be the next victim.