Athene Seyler

American professor John Holden arrives in London for a conference on parapsychology only to discover that the colleague he was supposed to meet was killed in a freak accident the day before...

An elderly countess strikes a bargain with the devil and exchanges her soul for the ability to always win at cards. An army officer, who is also a fanatic about cards, murders her for the secret, then finds himself haunted by the woman's spirit.