The brothers continue their investigation by questioning youngest sister (Re)Bekka, who obviously lies and realizes only now that she hasn't been dating an undertaker but Mathias. She joined the murder sorority after Jean-Claude objected to a flippant promise by his wife to grant Becca a private loan for her business project, which has already been notarized although nobody even consulted him. Their next murder attempt, electrocution in bath, went wrong due to childish Becca and accidentally killed an old neighbor, Alfons. After a prank war got out of hand, ...