Loch — Paul Zindel

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Sonar screens stalk the astonishing, massive water creatures that have been sighted in a remote Vermont lake. Fifteen-year-old Loch Perkins is aboard the Revelation, a high-tech search yacht, when the first creature explodes from the deep. With deadly, frightening power, it almost devours his girlfriend, Sarah, the daughter of a wealthy publishing mogul. The expedition's photographer -- hoping for a shot that will make his career -- is not as lucky....Suddenly the hunters have become the hunted.

In the days that follow, Loch plays a deadly game to save those he loves from the jaws of these prehistoric killing machines. At the same time, he tries to prevent the creatures from being destroyed by a man who will stop at nothing to be the first to obtain proof that one of the world's most enduring legends is based upon fact.