Dr. Jack
If you are crying for a laugh—visit Dr. Jack! If you need a new joy thrill, consult Dr. Jack. If you want to laugh until you are weak—see Dr. Jack.
Overview
Country doctor Jack Jackson is called in to treat the Sick-Little-Well-Girl, who has been making Dr. Saulsbourg and his sanitarium very rich after years of unsuccessful treatment.
Cast

Harold Lloyd
Dr. 'Jack' Jackson

Mildred Davis
The Sick-Little-Well-Girl

John T. Prince
Charles F. Haskell - Her Father

Eric Mayne
Dr. Ludwig von Saulsbourg

C. Norman Hammond
Jamison - the Lawyer

Jackie Condon
Boy's Pal (uncredited)

Mickey Daniels
Boy Patient (uncredited)

Richard Daniels
Man (uncredited)

William Gillespie
Card Player (uncredited)

Wally Howe
Asylum Guard (uncredited)
James T. Kelley
Card-Playing Father (uncredited)
'Auntie' Mackay
Undetermined Secondary Role (uncredited)