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.
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.
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)
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