Don't Weaken!

Ford Sterling Professor Yonson - the Dancing Master

James Finlayson Lightfingered Luke - Professor Yonson's Assistant

Charles Murray Frank Reilly

Fanny Kelly Reilly's Wife

Harriet Hammond Reilly's Daughter

Joseph Belmont Reilly's Daughter's Beau

Billy Armstrong The Pianist (uncredited)

Lige Conley Reilly's Poker Pal (uncredited)

Al Cooke The Butler (uncredited)

Virginia Fox Dance Pupil (uncredited)

Eddie Gribbon Dance Pupil (uncredited)

Patrick Kelly The Timekeeper (uncredited)

Gordon Lewis Dance Pupil (uncredited)

Charlotte Mineau Party Guest (uncredited)

Kalla Pasha Dance Pupil (uncredited)

John Rand The Cop (uncredited)

Tiny Ward Reilly's Poker Pal (uncredited)