A serial killer who drains his victims of blood is on the loose and London police follow him to a house owned by an eccentric scientist.
Dr. Browning
Fremont
Major Heinrich Benedek
Sylvia
Detective Supt. Bellaver
Keith
Ludwig
Schweitz
Detective Inspector Phil Strickland
Jane
Dr. David Sorel
Helen Bradford
Detective Sgt. Jimmy Joyce
Prof. Kingsmill
Konratz
Self - The Amen Corner
Erika
Detective Constable Griffin
Ken Sparten
Nurse
Valerie
Matron
Alaia Stevens, First Victim
Border Guard
