Star Trek: The Next Generation

Season 7, Episode 16

Episode Title: Thine Own Self

Air Date: 1994-02-14

Overview:

Stardate: 47611.2. Data find himself mysteriously stranded on a planet with no recollection of who he is or how he arrived there. Soon he is accused of spreading a plague among the inhabitants. Troi takes the bridge officer's test in an attempt to gain the rank of Commander.