Sienna Hart can open any lock in London. She steals for the Foxes, the crew her brother Theo runs — until the night Kieran Cross walks through their front door to collect. Cross owns every fence, every vault and every buyer in the city, and he names his price: not money. Her. Theo signs her away. Installed in Cross's house as property, bait and blade, Sienna learns the Crowns from the inside — and learns that the man who bought her is the only thing between her and everyone else who wants her dead. Across seventy episodes the bought bride becomes the most dangerous thief in London: she survives the broker sent to break her, watches a nineteen-year-old girl die on a nightclub floor, buries the boy who taught her to pick her first lock, and falls for the man responsible for all of it. Then the ledgers give her the truth — the gang war that bankrupted her brother was the Crowns all along. Cross ruined Theo until the only thing left to sell was her. She hands the empire to the police and vanishes across an ocean under a stolen name. He is already looking.
