Peter Cushing (Dracula, Star Wars)and Wanda Ventham (U F.O, The Lotus Eaters.) star in this spine chilling 1968 British horror classic, directed by Vernon Sewell (Curse Of The Crimson Altar, Burke & Hare). Six young men have been brutally murdered, their throats torn to ribbons and drained of all blood. The sole witness has been consigned to a lunatic asylum, raving about something terrible with gigantic wings... Suspecting that some sort of giant bird of prey may be loose, Inspector Quennell (Peter Cushing) turns to local zoologist Dr. Mallinger (Robert Flemyng) and his beautiful daughter Clare (Wanda Ventham) for help in solving the case. But Mallinger has terrible secrets all of his own – secrets that may soon endanger both Quennell and his innocent young daughter Meg (Vanessa Howard)... With a chillingly inventive script by Hammer’s Peter Bryan (The Plague Of The Zombies, The Hound Of The Baskervilles), this acclaimed Tigon British production has been extensively digitally remastered and restored for its first-ever Blu-Ray release.