A successful London ad-exec hires a beautiful Hungarian girl to pose for some modeling shots, little realising that she has overheard an assassination plot and is now being hunted by some dangerous killers.

Roger Moore
as Gary Fenn

Martha Hyer
as Jo Grinling

Alexis Kanner
as Tarquin

Claudie Lange
as Marla Kogash

Derek Francis
as Sir Charles Moberley

Ursula Howells
as Maggi Thwaites

Bernard Lee
as Chilmore

Francis Matthews
as Ruddock

Dudley Sutton
as Warren

Mona Bruce
as Myrna