The son of Greek and Danish royalty, Prince Philip was at the heart of the British royal family for decades—yet he remained an enigma. Here Ingrid Seward follows Philip from his aristocratic childhood in Paris through his military service during World War II and marriage to Elizabeth in 1947. Surveying Philip's seven decades beside the throne, Seward suggests that he eventually became one of the most complex, powerful, and confounding royals in British history.