In part one of the two-part, two-night second season finale of Fringe: Over There, Walter and Olivia travel to the parallel universe, and the anticipated face-off between Walter Bishop and William Bell occurs when special guest star Leonard Nimoy returns in the all-new Over There, Part 1 episode of Fringe airing Tuesday at 8 p.m. on SOLARtv.
Guest stars Nimoy, Orla Brady and Ari Graynor return.