- Ingrid Pitt's voice was dubbed. Supposedly, she was so furious at director Peter Sasdy that she vowed never to speak to him again.
- Countess Dracula was based on a real Countess, Elizabeth Bathory who lived in the late 1800s, who was said to have murdered women for fun and bathed in their blood to make herself more beautiful.
- The picture that appears behind the opening credits is an 1896 painting by Hungarian artist Istvan Csok. It shows the real Countess Bathory enjoying the torture of some young women by her servants. In an inner courtyard of one of her castles, the naked girls are being drenched with water and allowed to freeze to death in the snow.
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