YMMV / The Black Room

• Complete Monster: Gregor de Berghman is a cruel Tyrolean baron who devises an Evil Plan to murder his kindly twin brother, Anton, and impersonate him. Gregor's hobbies include serial murder; the film's namesake Black Room is a secret room where Gregor hides the bones of all the women he's killed. After successfully killing his brother and assuming his identity, Gregor also murders a colonel who knows the truth and arranges for an innocent man to take the fall for it. Gregor even kills his own devoted servant Mashka, a woman who has nothing but devotion to him, because she's an inconvenience to his plan of marrying another woman he values only as an object for him to possess.