Violinist Davis MacArthur bound the demon Murmur to himself to keep it from escaping into the world. Despite being plagued by hellish visions, he's beaten back mental illness and alcoholism to become a world-renowned virtuoso, until an encounter with an alluring stranger plunges him into a twisted, sexual game of cat-and-mouse filled with madness and murder. Desperate to save his soul, he risks damnation to protect the people he loves.