Cast a Dark Shadow

Edward Bare (Dirk Bogarde) kills his wealthy older wife, Monica (Mona Washbourne), after she asks her lawyer, Phillip Mortimer (Robert Flemyng), to change her will. He stages it to look as if she was accidentally asphyxiated while drunkenly trying to light a gas heater. To his chagrin, he discovers that she actually intended to leave him all her money. Instead, he only inherits the mansion from a prior will, while her millions are left in trust to her only relative, her sister Dora. An inquest rules it an accident, but Phillip makes it