After decades of cold war tension, the Federation and the Klingon Empire are on the verge of an historic treaty - until a political assassination threatens the peace process. With interplanetary war at stake, Kirk and Spock race against time to uncover a far-reaching conspiracy and restore order to the galaxy.

Nicholas Meyer (Star Trek II: The Wrath of Khan) returns to direct this thrilling Trek mystery. Meyer revised two scenes and provides insightful audio commentary for this deluxe edition, which also includes text commentary by Michael and Denise Okuda (co-authors of The Star Trek Encyclopedia), six making-of featurettes, cast and crew interviews, a tribute to DeForest Kelley and much more.