The brand new novella in the much-loved and #1 bestselling Rivers of London series!

Ghost hunter, fox whisperer, troublemaker.

It is the summer of 2013 and Abigail Kamara has been left to her own devices. This might, by those who know her, be considered a mistake. While her cousin, police constable and apprentice wizard Peter Grant, is off in the sticks, chasing unicorns, Abigail is chasing her own mystery. Teenagers around Hampstead Heath have been going missing but before the police can get fully engaged, the teens return home - unharmed but vague about where they've been.

Aided only by her new friend Simon, her knowledge that magic is real, and a posse of talking foxes that think they're spies, Abigail must venture into the wilds of Hampstead to discover who is luring the teenagers and more importantly - why?

Before becoming a bestselling author, Ben Aaronovitch was a screenwriter for Doctor Who and a bookseller at Waterstones. He now writes full time, and every book in his Rivers of London series has been a Sunday Times Top Ten bestseller. He is published in 14 languages and has sold more than 2 million copies around the world. Aaronovitch is also a trustee on the board of Cityread London and is a long-time supporter of Nigeria's premiere arts and cultural festival, The Aké Festival. He still lives in London, the city he likes to refer to as 'the capital of the world'.