Year Of Hell

As everyone except the show writers has noticed, Kes had warned them about the Krenim, and no one remembers it - it is a continuous problem that events of past episodes often are not reflected in the next ones, but this is the proverbial elephant in the room. The episode "Before and After" specifically foreshadowed the events here, yet it is like it never happened (huh...).

Nonetheless, if you forget this glaring error, the episode is great, both in its depiction of a ravaged Voyager and for introducing a villain who appears to have some depth and character - as well as a megalomania that will obviously be his undoing.