Currently available on 4 streaming services.

The Black Room streaming: where to watch online?

Currently you are able to watch "The Black Room" streaming on Tubi TV for free with ads or buy it as download on Amazon Video, Apple TV, Fandango At Home. It is also possible to rent "The Black Room" on Amazon Video, Apple TV online

Cast

Boris Karloff
Baron Gregor de Berghman / Anton de Berghman
Marian Marsh
Thea Hassel
Robert Allen
Lt. Albert Lussan
Thurston Hall
Col. Paul Hassel
Katherine DeMille
Mashka
John Buckler
Beran - the gypsy
Henry Kolker
Baron de Berghman
Colin Tapley
Paul Hassel as a young lieutenant
Torben Meyer
Peter, the majordomo
John George
Inn Waiter (uncredited)
John Bleifer
Franz - Captured Assassin-Villager (uncredited)
Marion Lessing
Maria the Chambermaid
George MacQuarrie
The Judge
Robert Middlemass
The Prosecutor
Edward Van Sloan
Doctor