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.
Vincent Price
as Sir Julian Markham
Christopher Lee
as Dr. J. Neuhartt
Rupert Davies
as Joshua Kemp
Uta Levka
as Heidi
Sally Geeson
as Sally Baxter
Alister Williamson
as Sir Edward Markham
Peter Arne
as Samuel Trench
Hilary Dwyer
as Lady Elizabeth Markham
Maxwell Shaw
as Hackett
Carl Rigg
as Norton
Harry Baird
as N'Galo
Godfrey James
as Weller
