Shortly after his return from India, a special agent of the British secret service falls victim to an insidious poisoning in London. Scotland Yard gets involved. But too late: valuable information has fallen into the hands of an international criminal gang...
Joachim Fuchsberger
as Harry Raffold
Karin Dor
as Ann Learner
Werner Peters
as Crayton
Carl Lange
as Colonel Gregory
Eleonora Rossi Drago
as Mabel Hughes
Marco Guglielmi
as Inspector Webster
Lorenzo Robledo
as Sam
Pierre Besari
as Bob
Antonio Casas
as Dr. Shipley
Roberto Rey
as John Millner
Julio Infiesta
as Inspector Burns
Fernando Sancho
as Gunman
