Cassia Thorne leads a double life. By day, she sells ballads at Bartholomew Fair. By night she spends her evenings locked up in Fleet Prison. Cassia has plans of escaping both of these lives. But this year there are rumours of children being snatched off of the streets of London and no one willing to help.

So Cassia decides to take matters into her own hands; with the help of a young pickpocket, Teo and her friend Felix, Cassia starts to investigate the disappearances. She soon discovers a sinister conspiracy at the heart of the city - mysterious men in blue coats and whispers of a beast that lives in the deep dark tunnels below the city. Can Cassia get to the bottom of the mystery and rescue the missing children before it's too late?

Join Cassia and her friends on a spine-tingling supernatural adventure through the streets of London!

Zohra Nabi grew up inventing stories for her two younger sisters. She studied law at Cambridge and Oxford universities, but secretly dreamed of being an author. Now she lives in London, browsing bookshops and writing magical adventures. Her debut The Kingdom over the Sea was a Waterstones Book of the Month.

Number of pages: 336
Reading age guide: 8 to 12 years
Publication date: 27th March 2025
Publisher: Simon & Schuster
ISBN: 9781398532922
Format: Paperback

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