‘An army.’ ‘Really? What for?’ ‘To take back Mycenae.’ Helen tossed her head. ‘They’re taking what’s theirs. Their uncle killed their father and exiled them when they were children. Now they’re men, and they have the support of Sparta.’ I knew that much of the story. Menelaus and Agamemnon were sons of Atreus, whose brother, Thyestes, had murdered him for the throne and cast them out.