The Diamond Wizard

Dennis O'Keefe as Joe Dennison Margaret Sheridan as Marline Miller Philip Friend as Insp. McClaren Francis de Wolff as Yeo Paul Hardtmuth as Dr. Eric Miller Cyril Chamberlain as Castle Alan Wheatley as Thompson Blake Gudrun Ure as Sgt. Smith Colin Tapley as Sir Stafford Beach

Montgomery Tully Director Dennis O'Keefe Director Jim O'Connolly Assistant Director