When Scarlet's grandma goes into a retirement home she must sort through her belongings in the cramped flat above a shop in Crouch End north London Here Scarlet comes across a real treasure a novel that Gran wrote imagining the life of a girl just like Scarlet who once upon a time lived in the flat & worked in a cake shop downstairs But as Scarlet reads about Ruby's life in Victorian London she begins to realise this is no piece of fiction
- Ruby was real! A real life facing real danger
- & a mystery that unravels to the present day