Unforgettable, VOY 4
Here’s some more Prime Directive-bashing. In a flashback, we see that Chakotay aided in the capture of a planet’s citizen just because he wanted to . . .leave? Seems odd.
Also odd, the race that “you can’t remember” and can put “viruses” into your computers so you’ll never know about them. Chakotay is the first person ever to think of pen and paper? Feh.