Edmund Lowe
— Brains Stanley aka Roger Winthrop
Nancy Carroll
— Grace Clark
Robert Armstrong
— Driller
Lew Cody
— Labels Castell
Warren Hymer
— Mousey
Dorothy Burgess
— Ethel aka Giggles
Grant Mitchell
— Dr. Crittenden - Dentist
Walter Walker
— Mr. Walker
Berton Churchill
— Mordant - Casket Buyer
Inez Courtney
— Public Stenographer (scenes deleted)
Susan Fleming
— Miss Jones - Stenographer
Luis Alberni
— Angelo - Janitor
Lee Kohlmar
— Old Man Cohen
Merna Kennedy
— Alice (scenes deleted)
Harvey Clark
— Fred J. Harper
Belle Mitchell
— Maria - Angelo's Wife
Leon Holmes
— Abe - Cohen's Son
Esther Muir
— Babe - Masseuse
Pat O'Malley
— Prison Interne
Lloyd Ingraham
— Ace - Blackjack Dealer
Eddie 'Rochester' Anderson
— Charlie - Porter (uncredited)