Tuvok’s memory is erased and his personality drastically changes after an attack.
6-09: The Voyager Conspiracy
The Starfleet-Maquis rivalry reignites when Seven of Nine uncovers evidence of several potential conspiracies aboard Voyager, one of which suggests that Voyager’s presence in the Delta Quadrant was no accident.
6-03: Barge of the Dead
B’Elanna travels the Klingon Barge of the Dead with her mother towards Gre'thor, the afterlife for dishonored souls.
6-07: Dragon’s Teeth
After 900 years, a planet’s inhabitants are brought out of suspended animation, with Voyager caught in the middle of their continued conflict.