Timetrap (ISBN 0671648705) is an original-series Star Trek novel by David Dvorkin, published by Pocket Books in 1988. For the week of June 12, 1988, Timetrap was the fifth-best-selling paperback book on The New York Times Best Seller list. The novel originally sold for US$3.95. Timetrap is Pocket's 40th numbered novel from the retronymed Star Trek: The Original Series. Simon & Schuster released an e-book version in September 2000.
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