A wave of mysterious murders has sent shockwaves through London, and soon Christopher finds himself on the run. His only allies are his best friend, Tom, courageous Molly, and a loyal feathered friend, Bridget. His only clues are a coded message about his master's most dangerous project, and a cryptic warning - 'Tell no one'.

Binding: Paperback;320 pages; Publisher: Penguin Random House Children's UK; Classification: Children?s / Teenage fiction and true stories; Weight: 290 g; Dimensions: 198 x 193 x 20

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