In this novel by Felix Gilman, one man embarks on a thrilling and treacherous quest for his people’s lost god - in an elaborate Dickensian city that is either blessed, or haunted. Arjun arrives in Ararat just as a magnificent winged creature swoops and sails over the city. For it is the day of the return of that mystical creature - the great Bird. But does it come for good or ill? And in the service of what god? Whatever its purpose, for one inhabitant the Bird sparks a long-dormant idea - to map the mapless city and liberate its masses with the power of knowledge.