The Unknown Purple poster
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The Unknown Purple

8.019231h 10mNRMovieMysteryScience Fiction

Inventor Peter Marchmont has discovered a purple light that renders the user invisible. On his release from prison, Marchmont, disguised as Victor Cromport, uses the light to revenge himself against his former wife, Jewel, and her partner,…

DirectorRoland West

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The Unknown Purple was released on October 1, 1923 but we couldn't find it on any streaming service yet. Rights can change — try again later.

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Cast · Directed by Roland West

HWHenry B. Walthall
Henry B. Walthall
Peter Marchmont / Victor Cromport
ALAlice Lake
Alice Lake
Jewel Marchmont
SHStuart Holmes
Stuart Holmes
James Dawson
HFHelen Ferguson
Helen Ferguson
Ruth Marsh
FLFrankie Lee
Frankie Lee
Bobbie
ETEthel Grey Terry
Ethel Grey Terry
Mrs. Freddie Goodlittle
JMJames Morrison
James Morrison
Leslie Bradbury
JAJohnny Arthur
Johnny Arthur
Freddie Goodlittle
RW
Richard Wayne
George Allison
BSBrinsley Shaw
Brinsley Shaw
Hawkins
MDMike Donlin
Mike Donlin
Burton
DPDorothy Phillips
Dorothy Phillips

More from Henry B. Walthall · Lead actor

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More from Alice Lake · Co-star actress

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More from Roland West · Director

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1918
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The Unknown Purple — streaming FAQ

Which OTT platform streams The Unknown Purple?

The Unknown Purple isn't streaming anywhere in Canada yet.

Is The Unknown Purple on Netflix?

No, The Unknown Purple is not on Netflix in Canada as of November 2026.

Is The Unknown Purple on Amazon Prime Video?

No, The Unknown Purple isn't on Amazon Prime Video in Canada right now.

Where can I watch The Unknown Purple for free?

The Unknown Purple isn't streaming in Canada yet, so there's no way to watch it free at the moment.

What is the OTT release date for The Unknown Purple?

The Unknown Purple hasn't started streaming in Canada yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around November 19, 1923. This is a prediction, not a confirmed date.