Ghost Dance (Star Trek: Voyager) (Dark Matters)

Ghost Dance is the twentieth book in the main Star Trek Voyager series. It is also the second book in the Dark Matters mini series.
==Book Description==
Janeway and her crew in one universe, and Chakotay and Paris in another, are forced to retrace the epic journey of "Voyager" across the Delta Quadrant. En route, they encounter old foes and allies, while striving to outrace the cataclysmic doom now overtaking two separate realities.
(Description from Amazon.com)