The Monk's Revenge or The Secret Enemy: A Tale of the Later Crusades is a historical novel written by Samuel Spring and published in 1860. The story is set during the Crusades, a series of religious wars fought between Christians and Muslims in the Middle East during the 11th to 13th centuries. The novel follows the story of a young knight named Sir Walter de Courcy who is sent to fight in the Holy Land. During his journey, he meets a mysterious monk...