Moonmist

Tamara Lynd has recently become engaged to Jack Tresyllian, a wealthy owner of the Tresyllian Castle in Cornwall, England. Shortly afterwards, she began seeing a ghost-like figure, a mysterious White Lady, who has allegedly been haunting the castle for centuries. A series of events and dark suspicions involving hidden treasure convince Tamara that her life is in danger. She contacts a friend of hers, a young American detective, asking him to travel to the castle and investigate the mystery.