"A Darkling Plain" is the final thrilling instalment in Philip Reeve's brilliantly-imagined creation, the world of the Traction Era, where mobile cities fight for survival in a post-apocalyptic future.

Agents for peace are bringing an end to the devastating conflict between the roaming Traction Cities and their fanatical enemies while Wren and her father Tom travel the Bird Roads in their airship, trying to forget that Hester has betrayed them.

In the ruined wreckage of the city of London they make a discovery that will hang the world, while Hester must face an implacable foe with the means and the will to destroy the entire human race. 'Big, brave, brilliant' - "Guardian". Philip Reeve has won the CILIP Carnegie Medal, the Guardian Children's Fiction Prize, the Nestle Children's Book Prize and the Blue Peter Book of the Year.