Red Dwarf: Parallel Universe

"Parallel Universe" is the sixth episode of science fiction sitcom Red Dwarf series two, and the twelfth in the show's run. It premiered on the British television channel BBC2 on 11 October 1988. Written by Rob Grant and Doug Naylor, and directed by Ed Bye, the plot involves the Red Dwarf crew travelling to a parallel universe where they meet alternative versions of themselves. This marked the final appearance of Norman Lovett as Holly, although he would return years later at the end of Series VII and then for the whole of Series VIII. The episode was re-mastered, along with the rest of the first three series, in 1998.