A detective investigates a racing scam.
Paul Kelly
as Mark MacArthur
Julie Bishop
as Betty Lindale (as Jacqueline Wells)
George McKay
as Joe Lavery
Robert Emmett O'Connor
as Larry Mann (aka John Mench)
Ray Bennett
as Franey Forrester
Wade Boteler
as Capt. Donovan
Edward Earle
as Ellery Richards
C. Montague Shaw
as James (J.R.) Weston
John Tyrrell
as Soapy Connor
Ted Oliver
as Spud Gitale
Horace Murphy
as Dr. Phillips
Ernie Adams
as Horse Player (uncredited)
