Buster Keaton

as Projectionist / Sherlock, Jr.

Kathryn McGuire

as Girl

Joe Keaton

as Girl's Father / Man on Film Screen

Erwin Connelly

as Hired Man / Butler

Ward Crane

as Sheik / Villain

Doris Deane

as Girl Who Loses Dollar Outside Cinema (uncredited)

Christine Francis

as Candy Store Girl (uncredited)

George Davis

as Conspirator (uncredited)

Kewpie Morgan

as Conspirator (uncredited)

Steve Murphy

as Conspirator (uncredited)

John Patrick

as Conspirator (uncredited)

Betsy Ann Hisle

as Little Girl (uncredited)

Ford West

as Theatre Manager / Gillette (uncredited)