The year is 1949, the city London. Dennis Knuckleyard is a hapless eighteen-year-old who works and lives in a second-hand bookstore. One day, on an errand to retrieve rare books, Dennis discovers that one of them does not exist. It is a fictitious book, yet it is physically there in his hands nonetheless. How? It comes from the Great When, a dark and magical version of the city that is beyond time. There, epochs blend and realities and unrealities blur. If Dennis does not take this book back to the other London, he will be killed. So begins a journey delving deep into the city's occult underbelly and tarrying with an eccentric cast of sorcerers, gangsters, and murderers, many of whom have their own nefarious intentions. Soon Dennis finds himself at the center of an explosive series of events that may alter and endanger both Londons. A propulsive tour through a fantastical London, where history and myth collide, murder stalks the streets and the mundane becomes very magical indeed The year is 1949, the city London. Amidst the smog of the capital is Dennis Knuckleyard, a hapless eighteen-year-old employed by a second-hand bookshop. One day, on an errand to acquire books for sale, Dennis discovers a novel that simply does not exist. It is a fictitious book, a figment from another novel. Yet it is physically there in his hands. How? Dennis has stumbled on a book from the Great When, a magical version of London beyond time and space, where reality blurs with fiction and concepts such as Crime and Poetry are incarnated as wondrous, terrible beings. But this other, magical London must remain a secret: if Dennis cannot find a way to return this book to where it belongs, he risks bizarre and disastrous repercussions, such as his body being turned inside out (or worse). So begins a journey delving deep into the city s occult underbelly and tarrying with an eccentric cast of sorcerers, gangsters, and murderers - some from legend, some all too real, and all with plans of their own. Soon Dennis finds himself at the centre of an explosive series of events that may alter and endanger both Londons forever. Thrilling, lyrical and sparkling with dark humour, The Great When is the first book in a new series by Sunday Times-bestseller and icon, Alan Moore. 'A breathless time-travelling classic. Savage, humane, comic, terrifying' Iain Sinclair Brilliant and so powerfully imaginative Adam Curtis 'A weird book and a complete joy' Mariana Enríquez A masterful step from one of our very best, uncompromising storytellers; Moore peels back the layers of London and reveals not only the history we know, but the histories that could have been, and, underneath it all, both the dark and beautiful truths about who we are as a nation. Heather Parry Alan Moore is an English writer widely regarded as the best and most influential writer in the history of comics. His seminal works include From Hell and The League of Extraordinary Gentlemen. He is also the author of the bestselling Jerusalem. He was born in Northampton, and has lived there ever since.