Episode Title: "SCORPION, PART II"
Production Number: 869
Original Air Date: 09-03-97
The Voyager crew works with the Borg to battle Species 8472, which lives in an interdimensional domain filled with organic fluid.
Drone Seven of Nine, Tertiary Adjunct of Unimatrix Zero One -- formerly human girl Annika Hansen -- is assigned to work on the Voyager, but she is severed from the Collective when the Borg break off the alliance and try to assimilate the ship.
Factoid: Seven of Nine was assimilated by the Borg 18 years ago.
Guest Characters: Kes
Alien Races: Borg, Species 8472, Ocampan
KEY: [brackets]=illusions *star=first appearance