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Gertrude Aldridge was responsible for the murders of many of her father's servants who worked at Aldridge Mansion. To spare the family of public humiliation, instead of turning her into the police, Sir Aldridge locked her in their basement and occasionally fed her through a small slot in the door.
Years later when a new owner moved in, they dug out her remains, but after repeatedly hearing strange sounds from the basement, they sealed it shut.
- In the film, she is portrayed by Bess Rous.