"A gentle botany student has to toughen up to replace his father as chief of police."
Harold Lloyd
as Harold Bledsoe
Barbara Kent
as Billie Lee
Noah Young
as Patrick Clancy SFPD
Charles Middleton
as John Thorne / The Dragon
Will Walling
as Captain Walton, SFPD 3rd Div.
Grady Sutton
as Man at Party (silent version) (scenes deleted)
Brooks Benedict
as Handcuffed Prisoner at Police Station (uncredited)
Eddy Chandler
as Cop (uncredited)
Rae Daggett
as Woman Sitting in Police Station (uncredited)
Douglas Haig
as Buddy Lee (uncredited)
Edgar Kennedy
as SFPD Desk Sergeant (uncredited)
Tetsu Komai
as Florist Henchman (uncredited)
James B. Leong
as Florist Henchman / High Priest (uncredited)
James Pier Mason
as Barry Steele / Dick the Dude (uncredited)
Nelson McDowell
as 1st Train Passenger (uncredited)
James Wang
as Dr. Chang Gow (uncredited)
Blue Washington
as Thorne's Henchman (uncredited)
Leo Willis
Paul Gerard Smith
Dialogue
Felix Adler
Story
Clyde Bruckman
Director
Malcolm St. Clair
John L. Murphy
Production Manager
Bernard W. Burton
Editor
Producer
Liell K. Vedder
Art Direction
James H. Anderson
Production Assistant
Gaylord Lloyd
Assistant Director
C. Bakaleinikoff
Music Arranger
Carl Himm
Lodge Cunningham
Sound
Writer
George D. Ellis
Henry N. Kohler
Director of Photography
Walter Lundin
