UK, 1970, color, 35mm, 95′
by Gordon Hessler
Script Christopher Wicking, Peter Saxon (novel) – Cinematography John Coquillon – Editing Peter Elliott – Music David Whitaker – Cast Vincent Price, Christopher Lee, Peter Cushing – Production American International Pictures (AIP), Tigon
A serial killer, who drains his victims of blood, is on the loose in London. The police follow him to a house owned by an eccentric scientist.