The Riddle of the Sphinx begins with a horseback escape out of revolutionary Iran to Paris, from Princeton, to a New York law practice, as this psychological drama that unfolds via alternate realities. A young privileged boy in the royal Iranian Pahlavi court in the 1970s is dealt a swift wake-up call when the Shah and his monarchy fall. A Princeton scholar is derailed by his obsession with a paramour. A corporate lawyer at the height of his career at a prestigious firm begins to question his picture-perfect life. This novel explores fate and identity, as Montagu crafts a dramatic journey of exile, obsession, and self-discovery.