The Devil Rides Out is a 1968 British 'Hammer Film Productions' supernatural horror film. It features Christopher Lee, Charles Gray, Niké Arrighi, Leon Greene, Patrick Mower, Sarah Lawson, Paul Eddington, and Rosalyn Landor. The powers of good are pitted against the forces of evil as the Duc de Richelieu wrestles with the charming but deadly Satanist, Mocata, for the soul of his friend. Mocata has the knowledge and the power to summon the forces of darkness and, as the Duc de Richelieu and his friends remain within the protected pentacle, they are subjected to ever-increasing horror until thundering hooves herald the arrival of the Angel of Death.