A film star's stand-in is murdered, and microfilm of North American early warning systems has been stolen. The film star, despite an aversion to travelling by sea, proceeds to Montreal on a luxury liner. In an attempt to find the mocrofilm Dr King is assigned as her personal doctor, and Steed goes under cover as a steward.
Elenco: Patrick Macnee , Honor Blackman , Diana Rigg , Linda Thorson , Ian Hendry .