Harold Lloyd

Character: Dr. 'Jack' Jackson

Mildred Davis

Character: The Sick-Little-Well-Girl

John T. Prince

Character: Charles F. Haskell - Her Father

Eric Mayne

Character: Dr. Ludwig von Saulsbourg

C. Norman Hammond

Character: Jamison - the Lawyer

Jackie Condon

Character: Boy's Pal (uncredited)

Mickey Daniels

Character: Boy Patient (uncredited)

Richard Daniels

Character: Man (uncredited)

William Gillespie

Character: Card Player (uncredited)

Wally Howe

Character: Asylum Guard (uncredited)

James T. Kelley

Character: Card-Playing Father (uncredited)

'Auntie' Mackay

Character: Undetermined Secondary Role (uncredited)

Florence Mayon

Character: Card Player's Daughter (uncredited)

Oscar Morgan

Character: Undetermined Secondary Role (uncredited)

Charles Stevenson

Character: Asylum Guard (uncredited)

Anna Townsend

Character: Jamison's Mother (uncredited)

Dorothy Vernon

Character: Restaurant Hostess (uncredited)

Joy Winthrop

Character: Undetermined Secondary Role (uncredited)