![Don't Weaken! Poster](https://image.tmdb.org/t/p/w500//j7L0kxbadvcNvsrfHpB8VM4iGVf.jpg)
Don't Weaken!
55.00%
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September 5, 1920
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Comedy
A dancing instructor gets involved with a newly rich family.
Featured Crew
Malcolm St. Clair
Director
Mack Sennett
Producer
J.R. Lockwood
Director of Photography
0
Cast
![Ford Sterling](https://image.tmdb.org/t/p/w300//jWwCuNR2eRpgxlRBKNTCTmCVHP0.jpg)
Ford Sterling
Professor Yonson - the Dancing Master
![James Finlayson](https://image.tmdb.org/t/p/w300//mKzmqNW32JgFYICiQfEFK5m8b8s.jpg)
James Finlayson
Lightfingered Luke - Professor Yonson's Assistant
![Charles Murray](https://image.tmdb.org/t/p/w300//9RiPulIsq2pbbmD0NEbC0fLho69.jpg)
Charles Murray
Frank Reilly
![Fanny Kelly](https://image.tmdb.org/t/p/w300//lGR4Vinvhfv9Z5ahsBn33662Mrs.jpg)
Fanny Kelly
Reilly's Wife
![Harriet Hammond](https://image.tmdb.org/t/p/w300//gzyfJlBA8RhgprnVUCcUvvzjqZk.jpg)
Harriet Hammond
Reilly's Daughter