"A famous detective is invited to a swanky party at an elegant mansion, but before the night is over he finds himself involved with gangsters, blackmail and murde"
John Miljan
as Bill Holt
Irene Ware
as Jane Maxwell
Iris Adrian
as Muriel Randel
Noel Madison
as Gus Colleti
Oscar Apfel
as Reuben Marshall
Barry Norton
as Tom Randel
Harry Holman
as Campbell Snowden
Betty Blythe
as Ann Randel
James P. Burtis
as Mike 'Jeff' Jefferies
Lew Kelly
as Police Sgt. Olsen
Wilson Benge
as Simpson - Butler
E.H. Calvert
as District Attorney McDougal
Stanley Blystone
as Henchman Joe (uncredited)
Sidney Bracey
as Jenkins - Butler (uncredited)
Don Brodie
as Henchman (uncredited)
Lester Dorr
as Party Guest (uncredited)
James Eagles
as Harry Randel (uncredited)
Paul Ellis
as Tony Cosmato (uncredited)
Robert Frazer
as Dr. Agnew (uncredited)
Kit Guard
as Henchman Eddie (uncredited)
Henry Hall
as Dr. Burgher (uncredited)
Frank O'Connor
as Detective McGurn (uncredited)
Frank R. Strayer
Director
Lon Young
Production Manager
Dick Tyler Sr.
Recording Supervision
Edward C. Jewell
Art Direction
Melville Shyer
Assistant Director
Maury M. Cohen
Producer
John W. Krafft
Adaptation
Roland D. Reed
Editor
M.A. Andersen
Director of Photography
Normon Lippincott
Novel
Screenplay