Apollo and his sister Artemis were the only twins to be descended from the gods of Mt. Olympus. In the Path of the Gods: Apollo: Light and Harmony is a look at the god who is associated with medicine, archery, light, music, and truth. Sir Peter Ustinov narrates the stories of Apollo, who avenged his mother's death by a python, only to invoke the rage of Hera, who had sent the snake to torment his mother. The ancient Greeks believed that Apollo taught mankind the art of medicine, and thought of him as the most handsome of all the gods.