'Rocks' Owen, the well-off owner of a car-hire business, is found murdered; the last place he was seen alive was the Blue Parrot nightclub. Scotland Yard go in to investigate, with the help of a visiting American detective and a nightclub hostess who may not be all she appears to be.
Dermot Walsh
as Bob Herrick
Jacqueline Hill
as Maureen Maguire
Ballard Berkeley
as Supt. Chester
Richard Pearson
as Quinney
June Ashley
as Gloria
Ferdy Mayne
as Stevens
John Le Mesurier
as Henry Carson
Valerie White
as Mrs. West
Victor Lucas
as Rocks Owen
Edwin Richfield
as Guido "Taps" Campelli
Diane Watts
as Carla
Arthur Rigby
as Charlie
