哈罗德·劳埃德

Harold Lloyd

饰：Dr. Jackson - "Jack" for short

米尔德丽德·戴维斯

Mildred Davis

饰：The Sick-Little-Well-Girl

John T. Prince

饰：Her Father

Eric Mayne

饰：Dr. Ludwig von Saulsbourg

C. Norman Hammond

饰：The Lawyer

查尔斯·史蒂文森

Charles Stevenson

饰：Asylum Guard (as Charles E. Stevenson)

Jackie Condon

饰：Boy's pal (uncredited)

Mickey Daniels

饰：Boy patient (uncredited)

Richard Daniels

饰：Man (uncredited)

William Gillespie

饰：Man (uncredited)

杰姆斯-凯利

James T. Kelley

饰：Card-playing Father (uncredited)

'Auntie' Mackay

'Auntie' Mackay

饰：Extra (uncredited)

Florence Mayon

Florence Mayon

饰：Card-Player's daughter (uncredited)

Oscar Morgan

Oscar Morgan

饰：Extra (uncredited)

Anna Townsend

饰：Mrs. Jamison, Lawyer Jamison's Mother (uncredited)

Dorothy Varden

饰：Restaurant Hostess (uncredited)

Joy Winthrop

饰：Extra (uncredited)

Dorothy Vernon

饰：演员 Actor/Actress

Wallace Howe

饰：演员 Actor/Actress