An original Doctor Who novel. With the Vykoid army swarming across Manhattan and sealing it from the world with a powerful alien force field, Amy has just 24 hours to find the Doctor and save the city. If she doesn't, the people of Manhattan will be taken to work in the doomed asteroid mines of the Vykoid home planet. But as time starts to run out, who can she trust? And how far will she have to go to free New York from the Forgotten Army?