December 1899. After the death of her beloved grandmother, Cleopatra Fox moves into the luxury hotel owned by her estranged uncle in the hopes of putting hardship and loneliness behind her. But the poisoning of a guest on Christmas eve throws her new life, and the hotel, into chaos. Cleo quickly realizes no one can be trusted, not Scotland Yard and especially not the hotel’s charming assistant manager.

India Steele is desperate. Her father is dead, her fiancé took her inheritance, and no one will employ her, despite years working for her watchmaker father. Indeed, the other London watchmakers seem frightened of her. Alone, poor, and at the end of her tether, India takes employment with the only person who’ll accept her–an enigmatic and mysterious man from America. A man who possesses a strange watch that rejuvenates him when he’s ill.

Jacqueline (Jac) has survived on the streets ever since escaping from the clutches of her ruthless uncle, the city’s powerful governor. He craves more than political influence and believes a legendary talisman in Jac’s possession can give it to him. To survive, Jac has honed her skills as a thief, catching the eye of Rhys Mayhew, a brother in an order of warrior priests. Rhys enlists her as a spy, and their partnership soon deepens into more. But Rhys’s faith demands strict adherence to oaths of denial.

The king's magnificent palace was built in a matter of weeks. No one saw the builders, no villagers are allowed beyond the gilded gate, and only one servant has ever left. The haunted look in her eyes as she was recaptured by the palace guards is something Josie, daughter of the village doctor, has never forgotten. For Josie, the palace is a mystery that grows more intriguing after she meets the captain of the guards, a man known only as Hammer, as mysterious and captivating as the palace itself. Whispers of magic fuel Josie's desire to uncover the truth, but an ordinary girl like her can only dream of ever being invited inside.

Librarian Sylvia Ashe knows nothing about her past, having grown up without a father and a mother who refused to discuss him. When she stumbles upon a diary that suggests she's descended from magicians, she's skeptical. After all, magicians are special, and she's just an ordinary woman who loves books. She seeks answers from a member of the most prominent family of magicians, but she quickly learns that finding the truth won't be easy, especially when he turns out to be as artless as her, and more compelling and dangerous than books.