From the bestselling author of Things in Jars and The Night Ship comes a spellbinding gothic novel in which lifelike machines walk, old bones lie buried beneath the marsh grass, and a young woman born crackling with power confronts the terrible truth of her origins.

A secret cannot stay locked away forever...

Bodkin Bell, orphan, pickpocket and survivor, doesn’t know where she came from, but she knows she’s different. Gaslights flare as she walks past. Cutlery spins. Shocks fly from her fingertips.

For years, she was ‘Little Spark’, the star of an electrifying sideshow—until the act went too far and she ended up in a London gaol.

Now she’s been offered a way out. A chance to serve at Point Mote, a vast, desolate house marooned on the misty Kent marshes. There, she will assist a reclusive family of cunning inventors in the creation of automata: miraculous, lifelike machines for which gentlemen collectors will pay handsomely.

But this house of wonders hides mysteries too. As Bodkin starts to question why she is really there, she unearths secrets that have been buried bone-deep for years—and a truth beyond all imagining. One that was never meant to be found.