When a Voyager crew member commits murder with no apparent motive, Tuvok performs a mind-meld that leads to dangerous results.
Janeway and Chakotay are left behind on a planet when each of them become infected with a disease that will kill them if they leave.
2-23: The Thaw
Voyager works to save a group of aliens from stasis when a dangerous computer infection threatens all of their lives.
2-26: Basics, Part I
The Kazon-Nistrim overtake Voyager, stranding the crew on a primitive planet.