Star Trek fans chose their favorite time travel episodes from throughout the Star Trek universe for this mind-bending four-disc collection. Join captains Kirk, Picard, Janeway and Sisko as they courageously lead their crews back and forth along the time-space continuum to protect the present and safeguard the future.

Includes "Tomorrow is Yesterday" and "The City on the Edge of Forever" (The Original Series); "Yesterday's Enterprise," "Cause and Effect," "Time's Arrow" and "All Good Things" (The Next Generation); "Little Green Men" and "Trials and Tribble-ations" (Deep Space Nine); and "Year of Hell (Parts I and II)" and "Endgame" (Voyager). Plus, text commentary on three episodes by Michael and Denise Okuda (co-authors of The Star Trek Encyclopedia).