Argument + 

Derantra, alarmed at the long absence of her husband, resolves to send their son Hyllus in quest of his father. When he left home Heracles had told her that in fifteen months would come the crisis of his fate⁠—either death or glory and rest from his toils. As she meditates, Lichas, the henchman of Heracles, comes in sight, tells her that his master is safe and will shortly follow. He is now at Cape Cenaeum in Euboea, about to raise an altar to Zeus in honour of his victories. With Lichas are a train of captive maidens and among them she espies Iolè. By cross-questioning she learns that Heracles has transferred to Iolè his love, and determines to win it back by means of a love-charm that the Centaur Nessus had left to her as he lay dying. So she sends by the hand of Lichas a festal robe besmeared with what proves to be a burning poison. Too late she discovers her mistake. The flock of wool that she had used to apply the charm and flung away smoulders self-consumed before her eyes. Hyllus returns from Euboea and denounces his mother as a murderer, describing the agonies of his tortured father. At the news Deianira passes within the house and slays herself with a sword. The dying Heracles is borne home on a litter. He gives his last injunctions to Hyllus, to bear him to Mount Oeta, there burn him on a pyre, and then to return and take Iolè to wife. With a bitter word against the gods who have thus afflicted their own son, the noblest man on earth, Hyllus gives an unwilling consent. + 