Horror-Mask Key Clue As Master-Killer Slays Four!
The Falcon travels to Mexico where he gets involved with murder and a mysterious painting.
Tom Lawrence, aka The Falcon
Raquel
Barbara Wade
Manuel Romero
Paula Dudley
Dolores Ybarra
James 'Lucky Diamond' Hughes [Script name: Winthrop Hughes]
Anton
Don Carlos Ybarra
Pancho Romero
Humphrey Wade
Officer Hoffman (uncredited)
Inspector O'Shea (uncredited)
Detective Castro (uncredited)
Detective Batalides (uncredited)
Isabel (uncredited)
Jarvis the Butler (uncredited)
Cantina Singer (uncredited)
Cantina Hostess (uncredited)
Mexican Doctor (uncredited)
Boy (uncredited)
