A married couple, Doris and Ted , live with Doris' bedridden mother. Doris wants Ted to bump off mum so they can get the inheritance, not realising that the others are in cahoots.A married couple, Doris and Ted , live with Doris' bedridden mother. Doris wants Ted to bump off mum so they can get the inheritance, not realising that the others are in cahoots.A married couple, Doris and Ted , live with Doris' bedridden mother. Doris wants Ted to bump off mum so they can get the inheritance, not realising that the others are in cahoots.