In 1880s England, Dr. Caspian and his wife Bronwen both have genuine psychic abilities, which they keep secret. Even so, they've gained a reputation as investigators of so-called psychic phenomena, exposing a number of fraudulent mediums. In their latest adventure, they're consulted by prominent politician Joseph Hinde, whose beautiful daughter Laura has become strangely withdrawn. Her secret assignations have led him to suspect that she might be...