A tale about the magic glimpsed from the corner of your eye, and one man's entry into the hidden world of London, as a young photographer begins to uncover a secret war - and a long-lost love - captured in his negatives.

Tom is a photographer and dreamer, capturing snapshots of the city around him, talking to the people on the fringes of his world, always searching for something he knows is missing but can never quite grasp.

He speaks to a beggar. He saves a woman from a gang on a darkened alley. He takes his photos . . . but only as he develops the negatives does he see the magical, hidden world he has brushed up against in all its beauty, and menace, and danger.

And deep in those negatives is the clue he needs to continue his search: a midnight, moonlit market in the secret heart of London, where everything is for sale and anything is possible . . .

Praise for Joanne Harris:

'Perfect reading for a chilly autumn evening' thesenovelthoughts

'Thought-provoking and evocative' Tor.com