4-11: Concerning Flight
When Voyager seeks to recover stolen supplies, Janeway receives help from the holographic version of Leonardo da Vinci, who is using The Doctor’s pirated mobile emitter.
4-08: Year of Hell, Part I
Voyager is repeatedly attacked by Krenim warships while a scientist alters history by eliminating entire races from existence.
Voyager encounters a disturbed, vengeful hologram while Seven senses Kim's infatuation.