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Are you Matthew J. Costello, author of the books below?
The 7th Guest by Matthew J. Costello Beneath Still Waters by Matthew J. Costello Secret Identity Crisis by Matthew J. Costello Child's Play 3 by Matthew J. Costello Darkborn by Matthew J. Costello Sleep Tight by Matthew J. Costello Wizard of Tizare by Matthew J. Costello The 7th Guest Original Script by Matthew J. Costello Alone Against the Dark by Matthew Costello Three Films and a Play by Matthew J. Costello


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