Mortal Engines by Philip Reeve

the world: nothing can go wrong."
    Katherine smiled gratefully at him, but she kept her fingers crossed just the same, and Dog caught something of her mood and started to whimper softly.
    From inside the hangar came the sound of hatches slamming shut and the rattle of boarding-ladders being dragged clear. An expectant hush fell over the stands. Along the tier's edge High London held its breath. Then, as the band struck up "Rule Londinium", Valentine's ground-crew began dragging the 13th Floor Elevator out into the sunlight, a sleek, black dart whose armoured envelope shone like silk. On the open platform at the stern of the control gondola Valentine stood waving. He saluted the ground-crew and the flag-decked stands and then smiled straight at Katherine, picking her face out of all the others without a moment's hesitation.
    She waved back frantically, and the crowd cheered themselves hoarse as the 13th Floor Elevator's engine-pods swivelled into take-off position. The ground crew cast off the mooring-hawsers, the propellers began to turn and blizzards of confetti eddied in the down-drafts as the huge machine lifted into the air. Some Apprentice Historians spread out a banner reading Happy Valentine's Day! and the cheers went on and on, as if the crowds thought it was their love alone which was keeping the explorer airborne. "Val-en-tine! Val-en-tine!"
    But Valentine took no notice of the noise or the flags. He stood watching Katherine, one hand raised in farewell, until the airship was so high and far away that she could not make him out any more.
    At last, when the Elevator was just a speck in the eastern sky and the stands were emptying, she wiped away her tears, took Dog's lead and turned to go home. She was already missing her father, but she had a plan now. While he was away she would make her own enquiries and find out who that mysterious girl had been, and why she scared him so.
     

     
    11
     
    AIRHAVEN
     
     
    Once he had washed and slept and had something to eat, Tom began to decide that adventuring might not be so bad after all. By sunrise he was already starting to forget the misery of his trek across the mud and imprisonment in Speedwell. The view from the Jenny Haniver's big forward windows as the airship flew between golden mountains of dawn-lit cloud was enough to make even the pain of Valentine's betrayal fade a little. At breakfast-time, drinking hot chocolate with Miss Fang on the flight deck, he found that he was enjoying himself. As soon as the Jenny Haniver was safely out of the range of Speedwell's rockets the aviatrix had become all smiles and kindness. She locked her airship on course and set about finding Tom a warm fleece-lined coat and making up a bed for him in the hold, a space high up inside the airship's envelope, heaped with a cargo of sealskins from Spitzbergen. Then she led Hester into the medical bay and went to work on her injured leg. When Tom looked in on her after breakfast that morning the girl was sleeping soundly under a white blanket. "I gave her something for the pain," explained Miss Fang. "She will sleep for hours, but you need have no fear for her." Tom stared at Hester's sleeping face. Somehow he had expected her to look better now that she had been washed and fed and had her leg fixed, but of course she was as hideous as ever.
    "He has made a mess of her, your wicked Mr Valentine," the aviatrix said, leading him back to the flight deck, where she took the controls off their automatic setting.
    "How do you know about Valentine?" asked Tom.
    "Oh, everyone has heard about Thaddeus Valentine," she laughed. "I know that he is London's greatest historian, and I also know that that is just a cover for his real work: as Crome's secret agent."
    "That's not true!" Tom started to say, still instinctively defending his ex-hero. But there had always been rumours that Valentine's expeditions involved something darker than mere archaeology, and now that he had seen the great man's ruthless