Diane Duane 
Wounded Sky [EPUB ebook] 

An original novel based on the acclaimed Star Trek TV series! An alien scientist invents the Intergalactic Inversion Drive, an engine system that transcends warp driveand the U.S.S Enterprise will be the first to test it! The Klingons attempt to thwart the test, but a greater danger looms when strange symptoms surface among the crewand time becomes meaningless. Now Captain Kirk and his friends face their greatest challengeto repair the fabric of the Universe before time is lost forever!