"Cathexis"
UK Tape 1.7 - Episode 1

Both Tuvok and Chakotay return from a routine expedition injured -- Tuvok with minor ailments and Chakotay greviously injured. During an encounter with a black nebula, Chakotay's neural energy was depleted; unless it is returned, Chakotay will be doomed to a life as a brain-dead host. While trying to return to the nebula, the crew of Voyager discovers that an alien presence is aboard and able to control their efforts.

"Faces"
UK Tape 1.7 - Episode 2

B'Elanna Torres and Lt. Tom Paris are abducted by the alien race who suffer from the Phage. During an experiment, B'Elanna is literally split into two separate beings -- one fully Klingon, the other fully human -- by Sulan, a Vidiian Soldality scientist in search of a cure for the deadly disease. Her two selves must learn to work together in order to escape the alien laboratory and rescue Lt. Paris.