London, 1754. Six years after leaving her illegitimate newborn at the Foundling Hospital, Bess Bright returns to reclaim the daughter she has never known. Dreading the worst, that she has died in care, she is astonished to discover someone pretending to be Bess has already claimed her. Her life is turned upside down as she tries to find out who has taken her little girl--and why. Less than a mile from Bess's poor lodgings, in a quiet Georgian townhouse, lives Alexandra, a reclusive young widow. When her close friend--an ambitious doctor at the orphanage--persuades her to hire a nursemaid to help care for her daughter, she is hesitant to welcome someone new into her home. But her past is threatening to catch up with her and tear her carefully constructed world apart. From the Sunday Times bestselling author of The Familiars comes this captivating story of mothers and daughters, class and power, and love against the greatest of odds.