Buster Keaton

Projectionist / Sherlock, Jr.

Kathryn McGuire

Girl

Joe Keaton

Girl's Father / Man on Film Screen

Erwin Connelly

Hired Man / Butler

Ward Crane

Sheik / Villain

Doris Deane

Girl Who Loses Dollar Outside Cinema (uncredited)

George Davis

Conspirator (uncredited)

Kewpie Morgan

Conspirator (uncredited)

Steve Murphy

Conspirator (uncredited)

John Patrick

Conspirator (uncredited)