In the second film of the series (and not a second part of anything), Gay Lawrence, aka The Falcon, is about to depart the city to marry his fiancée, Helen Reed, when a mystery girl, Rita Mara, asks for his aid in disposing of a secret formula for making synthetic diamonds. He deliberately allows himself to be kidnapped by the gang for which Rita works. His aide, "Goldy" Locke, trails the kidnappers and brings the police. But the head of the gang escapes, and the Falcon continues the pursuit.
George Sanders
Wendy Barrie
James Gleason
Allen Jenkins
Mona Maris
Fred Aldrich
Bobby Barber
Roxanne Barkley
Eddie Borden
Jack Carr
Eddie Arden
Anthony Blair
Jack Chefe
Russ Clark
Leo Cleary
Hans Conried
Alec Craig
Aline Dixon
Eddie Dunn
Art Dupuis
William Forrest
Edward Gargan
Eddie Hart
Youda Hayes
Selmer Jackson
Victor Kilian
Frank Martinelli
Malcolm 'Bud' McTaggart
Frank Moran
Amarilla Morris
Paul Newlan
Frank O'Connor
Earle Ross
Dick Rush
Elizabeth Russell
Mickey Simpson
Douglas Spencer
Al Sullivan
Harry Lee