Ilium weaves a dark and thrilling tapestry of global espionage. A young English woman, burdened by an unhappy past in London, seeks her chance to break free from her shackles. Her story takes an unexpected turn when she marries Marcus, a mysterious older man who introduces her to a clandestine world at the fringes of high society. Tasked with a simple yet cryptic mission, she must assume the guise of an art advisor on Cap Ferret. As she is plunged into a luxurious compound overseen by the enigmatic Edouard and his family, she becomes enmeshed in a looming CIA-Mossad operation. Each mysterious figure she encounters is a puzzle piece in a grand, dangerous game. With stakes at their peak, the young woman's role as a perfect asset may come with a price too heavy to bear, forever altering the course of her life in this spellbinding tale of espionage and identity.