The Black Room (1935)

The Black Room is a 1935 American horror film starring Boris Karloff and Marian Marsh.

Plot
A tyrant ignores an ancient prophecy and murders his benevolent younger twin brother and assumes his identity in order to remain ruler of his land.

Cast

 * Boris Karloff as Baron Gregor de Berghman
 * Marian Marsh as Thea Hassel
 * Robert Allen as Lt. Albert Lussan
 * Thurston Hall as Col. Paul Hassel
 * Katherine DeMille as Mashka
 * John Buckler as Beran
 * Henry Kolker as Baron Frederick de Berghman
 * Colin Taley as Lt. Paul Hassel
 * Torben Meyer as Peter