Matthew Costello is the bestselling author of a number of successful novels, including Vacation, Home, and Beneath Still Waters, which was adapted by Lionsgate as a major motion picture. He has written for the Disney Channel, BBC, SyFy, and has also designed dozens of bestselling games, including the critically acclaimed The 7th Guest, Doom 3, Rage, and Pirates of the Caribbean.
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Last year at Cherringham High, and for three girls that means facing the School Summer Challenge, a grueling fifty-mile hike across the Cotswolds, through thick woods, over steep hills, camping each night under the stars. But when one of them disappears i... SEE MORE