The Man in Half Moon Street

Dr. Julian Karell (Nils Asther), a British doctor and painter, has discovered a treatment that can indefinitely prolong his life using glands stolen from human victims, allowing him to retain his youth and live throughout the ages. As he navigates his new relationship with Eve Brandon, he must also contend with the guilt of his colleague Dr. Kurt van Bruecken and a police investigation into one of his recent murders. With his secret treatment hanging in the balance, Karell's eternal youth is threatened by mortality unless he can renew his supply of glands.