Sherlock Jr.

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)

Christine Francis

Candy Store Girl (uncredited)

George Davis

Conspirator (uncredited)

Kewpie Morgan

Conspirator (uncredited)

Steve Murphy

Conspirator (uncredited)

John Patrick

Conspirator (uncredited)

Betsy Ann Hisle

Little Girl (uncredited)

Ford West

Theatre Manager / Gillette (uncredited)