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Like any community with its shared history and secrets, the East End of London has its ghosts – and there are times that Will Thorn feels like one of them as he goes about his job on the London Underground, unnoticed by anybody but his close family and friends. Until the day that, during a station evacuation, he finds a young girl covered in dirt cowering on a ledge inside one of the tube tunnels. At first considered foreign or mute, it soon becomes clear that Beth, named after the station she was found in, is in fact, able to speak, although the impossible things that she says fill Will with awe and fear:
In a community which still very much feels the sorrow of a tragedy from seventy years ago, word soon spreads throughout London and the rest of the country about the Miracle of Bethnal Green and Will s quiet and ordered life is turned upside down as he tries to protect the strange and unsettling child from the vultures of the press. But is Beth Green all that she seems?