Christopher Lee as J.D. Morley

Boris Karloff as Professor John Marsh

Mark Eden as Robert Manning

Virginia Wetherell as Eve Morley

Barbara Steele as Lavinia Morley

Michael Gough as Elder

Roger Avon as Sergeant Tyson (uncredited)

Michael Warren as Chauffeur (uncredited)

Rosemarie Reede as Esther

Denys Peek as Peter Manning (uncredited)

Ron Pember as Petrol Attendant (uncredited)

Rupert Davies as The Vicar (uncredited)

Derek Tansley as Judge (uncredited)

Nicholas Head as Blacksmith (uncredited)

Nova St. Clair as Girl Chased by Cars

Terry Raven as First Car-Chase Driver

Douglas Mitchell as 2nd Car-Chase Driver

Vivienne Carlton as Sacrifice Victim (uncredited)

Nita Lorraine as Woman with whip (uncredited)

Tasma Berenton as Party Girl Being Painted

Vicky Richards as Party Girl Belly-Dancing

Carol Anne as 1st Virgin (uncredited)

Jenny Shaw as 2nd Virgin (uncredited)

Kevin Smith as Party Drunk

Vikki Richards as Belly Dancer at Party