A stunning new novel that reimagines the unexplained 11-day disappearance of Agatha Christie that captivated the world.

"A long time ago, in another country, I nearly killed a woman..."

So begins The Christie Affair, told from the point of view of Miss Nan O'Dea, a fictional character but based on someone real. In 1925, she infiltrated the wealthy, rarified world of author Agatha Christie and her husband, Archie. A world of London townhomes, country houses, shooting parties, and tennis matches. Nan O'Dea became Archie's mistress, luring him away from his devoted wife. In every way, she became a part of their world--first, both Christies. Then, just Archie.

The question is, why? And what did it have to do with the mysterious eleven days that Agatha Christie went missing? The answer takes you back time, to Ireland, to a young girl in love, to a time before The Great War. To a star-crossed couple who were destined to be together--until war and pandemic and shameful secrets tore them apart. What makes a woman desperate enough to destroy another woman's marriage? What makes someone vengeful enough to hatch a plot years in the making? What drives someone to murder? These questions and more are explored in Nina de Gramont's brilliant, unforgettable, lush, and powerful novel.