The final book of the thrilling Predator Cities series!

London is a radioactive ruin. But Tom and Wren discover that the old predator city hides an awesome secret that could bring an end to the war. As they risk their lives in its dark underbelly, time is running out. Alone and far away, Hester faces a fanatical enemy who possesses the weapons and the will to destroy the entire human race.

This is the concluding installment in the Predator Cities series, where Philip Reeve masterfully wraps up the breathtaking adventures that began with Mortal Engines.