Harold LloydDr. 'Jack' Jackson Mildred DavisThe Sick-Little-Well-Girl John T. PrinceCharles F. Haskell - Her Father Eric MayneDr. Ludwig von Saulsbourg C. Norman HammondJamison - the Lawyer Jackie CondonBoy's Pal (uncredited) Mickey DanielsBoy Patient (uncredited) Richard DanielsMan (uncredited) William GillespieCard Player (uncredited) Wally HoweAsylum Guard (uncredited) James T. KelleyCard-Playing Father (uncredited) 'Auntie' MackayUndetermined Secondary Role (uncredited) Florence MayonCard Player's Daughter (uncredited) Oscar MorganUndetermined Secondary Role (uncredited) Charles StevensonAsylum Guard (uncredited) Anna TownsendJamison's Mother (uncredited) Dorothy VernonRestaurant Hostess (uncredited) Joy WinthropUndetermined Secondary Role (uncredited) Sam TaylorRegisseur / Story Fred C. NewmeyerRegisseur Thomas J. CrizerSchrijver / Redacteur Hal RoachProducer / Story Walter LundinDirector Of Photography Robert A. GoldenAssistant Director