Age range 9 to 12 years Father Thames is the page-turning sequel to London Deep, set in a sinking city where two rival police forces - kids vs adults - compete to keep the peace. It is half book, half graphic novel, with artwork on every page. Rebellious teen Jemima Mallard has done the unthinkable. She's joined the Youth Police Department (YPD). Is she serious, or is she spying for the criminal Father Thames? Fellow YPD officer Nick Mallard isn't sure. Before he can test her loyalty, the two must go to war. Their city is under attack. From the Thames Barrier Reef to the Sink estates, strange ships have breached London's defences. Can Jem and Nick find find a way to turn them back?