Church, Ruth, Ryan, Laura and Shavi have joined forces with Tom, a hero from the mists of time, to wage a guerrilla war against the iron rule of the gods, but if The ancient Celtic festival of Samhain dawns, the dark god Balor will usher in the eternal night and Mankind's days will be numbered.

When Jack Churchill and Ruth Gallagher encounter a terrifying, misshapen giant beneath a London bridge, they are plunged into a mystery that portends the end of the world as we know it. All over the country, the ancient gods of Celtic myth--together with terrifying creatures of folklore--are returning to the land from which they were banished millennia ago. As technology starts to fail, Jack and Ruth are forced to embark on a desperate quest for four...