When the show begins, you learn that Mr. Paris is being held on some planet and has been convicted of murder! Their method of obtaining the truth about a killing is unique--this society is able to examine the brain of the deceased and pull their memory of their own death from it! And, this memory clearly shows Tom Paris murdering a guy! However, while most folks on Voyager would agree he's a jerk, he's no murderer and not surprisingly Captain Janeway wants to investigate. So the fun- loving Tuvok does his own investigation and learns something very unusual and tricksy. What? See the show.
This episode is well written and interesting--especially in the manner which this planet punishes murder. All in all, one of the better of the early shows.