Nightmare Castle (1965)

Plot

A cruel count exacts brutal revenge on his unfaithful wife and her lover, shocking their lives with torture and murder before discarding their hearts. Years later, he remarries, but his new bride finds herself plagued by terrifying nightmares and ghostly apparitions connected to the dark past. As she grapples with these supernatural disturbances, the sinister legacy of her husband’s violent history threatens to engulf her, revealing the chilling consequences of betrayal and vengeance.