A series of unexplainable accidents befall the people and companies responsible for developing the world's first supersonic airliner. A British agent is sent to investigate and with the help of another agent uncovers a plot masterminded by Carl Petersen who stands to gain eight million pounds if the aircraft is not ready by a certain date.
Richard Johnson
as Hugh Drummond
Daliah Lavi
as Helga
Beba Lončar
as Pandora
James Villiers
as Carl Petersen
Vanessa Howard
as Robot No. 7
Maurice Denham
as Mr. Mortimer
Robert Morley
as Miss Mary
Sydne Rome
as Flicky
Adrienne Posta
as Drummond's Daily
Florence Desmond
as Lady Manderley
Ronnie Stevens
as Peregrine Carruthers
Virginia North
as Robot No. 9
