by Jack Vance

USA. Colour 78 minutes. Directed by Buzz Kulik. Adapted by Peter Martin. Actors: Scott Jacoby, Pippa Scott, John Larch, Dabney Coleman, Kim Hunter, John Fiedler. Intriging small thriller. Rating: Good.

Family with three daughters move into an old house not realising that there's a secret room with a psychopatic teenager, who already has killed a scornful nobleman.