Juggernaut is a 1936 British mystery film, starring Boris Karloff and Joan Wyndham. Directed by Henry Edwards, it was based on the novel by Alice Campbell and was distributed by Julius Hagen Productions. It was also known as The Demon Doctor.^[1]

Victor Sartorius (Karloff) is an ailing doctor working in Morocco. He teams up with Lady Yvonne Clifford (Mona Goya) in a plot to poison her husband, Sir Charles Clifford (Morton Selten), so he can collect the £20,000 necessary to save his experiments and his funding. Roger Clifford (Arthur Margetson), the son of Sir Charles has also been marked for death. The only one who can stop the murder plot of Sartorius is Nurse Eve Rowe (Joan Wyndham).

• Boris Karloff as Dr. Victor Sartorius
• Joan Wyndham as Nurse Eve Rowe
• Arthur Margetson as Roger Clifford
• Mona Goya as Lady Yvonne Clifford
• Anthony Ireland as Capt. Arthur Halliday (as Antony Ireland)
• Morton Selten as Sir Charles Clifford
• Nina Boucicault as Miss Mary Clifford (as Mina Boucicault)
• Gibb McLaughlin as Jacques (servant)
• J. H. Roberts as Chalmers (butler) (as H.H. Roberts)
• Victor Rietti as Dr. Bousquet

• Boris Karloff filmography