Infernal Devices (Mortal Engines Quartet #3) by Philip Reeve

Format : Paperback 

Condition : New

Genre : Young Adult

Teenager Wren, bored and desperate for adventure in static Anchorage, is the eager dupe of limpet sub Lost Boys, and she and her stolen Tin Book are taken in turn. Her parents Tom and Hester set off to rescue her, but the journey will stir up old needs, old secrets - and send them back into perilous waters.