New England, 2022. Three years ago, single mother Mallory Dunne’s 10-year-old son, Sam, suffered acute poisoning from a toxic death cap mushroom. Now, searching for a donor kidney, Mallory is forced to confront two harrowing secrets from her past: her mother’s adoption and her romance with her childhood best friend, Monk Adams, which was cut short by a devastating betrayal. Cairo, 1951. Hungarian refugee Hannah Ainsworth has married a wealthy British diplomat with a coveted posting in glamorous Cairo. But a fateful encounter with the enigmatic manager of a hotel bristling with spies leads to a passionate affair that will reawaken Hannah’s longing for everything she once lost. As revolution simmers in the Egyptian streets, a pregnant Hannah finds herself snared in a game of intrigue between two men --- and an act of sacrifice that will echo down the generations.