Antonio Riccardi, a rare stamp dealer who is secretly a hired killer, pays for the violin lessons of his gifted brother Giuseppe. To meet the expenses of Giuseppe's concert debut he accepts a further job, but his decision to do so provides Detective Inspector Carson, who has long hoped to ensnare Tony, with an opportunity that might now enable him to bring about his downfall.
Sydney Tafler
as Antonio Riccardi
Ronald Howard
as Detective Inspector Carson
Katharine Blake
as Maria Riccardi
John Hewer
as Giuseppe Riccardi
June Rodney
as Helen Garrett
Gerald Case
as Detective Sgt. Stott
Gerald Case
as Charlie
Reginald Dyson
as Josef Meyerling
Martin Benson
as Catesby
Sam Kydd
as Bert
Ewen Solon
as Fred
