Absolutely unbeatable as a Victorian ghost story this 1972 BBC production has everything. Haunting theme music, an ancient mystery, wintery coastal vistas, shadowy figures seen in a distant landscape, beautiful slow pace, sudden terror and the gradual disintegration of the main protagonist as he is pursued by the guardian. Solid performances by Peter Vaughan as the seeker of treasure and Clive Swift as the holidaying doctor who befriends him. No blood or silly special effects, it is a spine chilling masterpiece that still causes frissons even after 50 years.