Despite the 1971 release date, this film was actually shot in 1965, and all the better for it. Cleanly shot in black & white with drawling saxophone music on the soundtrack, it's more like an Italian giallo than an actual horror film with Robert Winston (no relation) as the clean-cut, sharp-suited hero Adam Rourke (author of a book on the motivation and detection of sex crimes) hot in pursuit of "a homicidal maniac with delusions of history".
Most of the supporting cast are obviously dubbed, including Katherine Henryk as an English rose called 'Sylvia'; that a local detective called 'Miguel' has such an Anglo-Saxon sister is explained by the fact that she's adopted.
Most of the supporting cast are obviously dubbed, including Katherine Henryk as an English rose called 'Sylvia'; that a local detective called 'Miguel' has such an Anglo-Saxon sister is explained by the fact that she's adopted.