serial mom . kathleen turner play beverly and the seemingly perfect and cheerful housewife and mom ( who also happen to be a foul mouth serial killer on the side ) and in john water consistently sharp and amusing satire serial mom . as far a plot structure go and serial mom isn not all that impressive and but turner sheer comic energy a she kill typical suburban people for steal parking space and not rewinding their rent video carry this one quite a way . rat r. half out of .