One of the last of the silent Sherlock films.

A young woman receives an invitation from the Governor of an island prison to spend a week with him. She does so, but conceals the fact that her husband is being held as a convict on the island.

A crazed scientist murders his wife, walls her up, then flees. A reporter sets out to track him down. Remake of Unheimliche Geschichten (Richard Oswald, 1919).