Evil lurks in the gloomy house at Markham Manor where a deranged Sir Edward is the chained prisoner of his brother Julian. When Sir Edward escapes, he embarks on a monstrous killing spree, determined to seek revenge on all those whom he feels have double-crossed him.

• American International Productions (England)
• Vincent Price
• Christopher Lee
• Rupert Davies
• Uta Levka
• Sally Geeson
• Alister Williamson
• Peter Arne
• Hilary Dwyer