Millions huddle in Coldharbour, waiting for the huge and terrifying Roar.
Milo, the silver child, is the first line of the Earth's defence.
Under his wings, Helen probes the Roar's mind, while the twins, Emily and Freda, struggle to free the mysterious Protector.
Walter's task is the hardest of all - keeping the others alive for long enough to find a weapon to defeat the Roar. Only Thomas can release that weapon - if he can finally discover the true purpose of his remarkable gift.
But a second enemy is also ranged against them. As the Roar approaches from space, her firstborn, Carnac, is crawling from the depths of the Earth.
Only a small number of children, the drill-handed Unearthers, led by Tanni, stand in his way. With the appearance of Cliff McNish's debut fantasy novel The Doomspell, The Bookseller immediately hailed him as 'a great new voice in writing for children.' His ghost story Breathe was voted in May 2013 by The Schools Network of British Librarians as one of the top adult and children's novels of all time.