Celebrating the end of exams with best friend Grace, 17-year-old Alex rescues a swan caught on a wire in the Thames mud and finds an extraordinary bracelet. She discovers that she can use it to communicate with the river's dead. Condemned to a half-life of misery, they must steal the happiness of the living to exist. Callum - desperate, lonely and breathtakingly good-looking - is one of them. Alex falls deeply in love.

The long-awaited new novel from Sue Ransom is a dark and sinister novel for 12+ readers. Imagine meeting someone from a community living far below the streets of London, someone who's never seen daylight or breathed fresh air. Someone who's got a secret, and a story, and a plan that will put you and the boy you love in terrible danger...It's an ordinary school day but Lily is about to step into a nightmare. How can Lily trust the girl she rescues from the Tube tunnel? It's only when Lily finds herself in the labyrinth beneath London that she learns the horrific truth – about the Farmer, the Crop, and about herself...

Alex knows there's a way that she and Callum can be together. Catherine holds the key to unlocking the secret but she's disappeared. Olivia has answers, too, but they're hidden deep inside her troubled mind and won't be found. It seems impossible but Alex can't give up. The question is, how much will she risk to be with the one she loves? Could it be everything?

Still recovering from her earlier brush with death, Alex's source of strength and comfort is Callum, still locked in a sad half-life after drowing in the river Fleet that flows into the Thames. And she needs all the strength and comfort she can get but someone is out to make her life a misery.