When his best friend is murdered inside a London dancehall, a cab driver and his girlfriend involve themselves in the investigation and discover a major criminal operation hiding behind the club's friendly facade.
Richard Attenborough
as Ted Peters
Sheila Sim
as Joy Goodall
Barry Jones
as E. J. Gregory
Barry K. Barnes
as Paul Baker
Judy Kelly
as Toni Masters
John Warwick
as Det. Insp. Carter
Garry Marsh
as Det. Sgt. Murray
Diana Dors
as Annette
Bill Owen
as Dave Robinson
Cyril Chamberlain
as Henchman "Sniffy"
Peter Croft
as Johnny, bartender-henchman
Danny Green
as Henchman Sid
