Book excerpt: An explosive lesson in history! Thomas Nightingale is one of the most highly revered magicians in Europe and a respected Detective Inspector – but he holds a guarded past. His protégé, Detective Constable Peter Grant, is about to discover some of Nightingale’s deepest secrets, hidden within the archives of the London Metropolitan Police’s Special Operations Unit. From Rivers of London author Ben Aaronovitch and Andrew Cartmel (Doctor Who, The Vinyl Detective), with art by Brian Williamson (Doctor Who, Hook Jaw), the million-selling series continues with this latest instalment. Step back in time with Grant as he learns how Nightingale unravelled a mystery filled with murder, comic books, and atomic secrets that threatened to destroy Britain.