Thine Own Self

Star Trek: The Next Generation  Season 7 Episode 16

Air Date: 2/14/1994

Stardate: 47611.2 On a mission to recover radioactive debris from a probe that crashed on a pre-industrial planet, a mishap causes Data to lose his memory of his past. He is taken in by a local family, but soon many of the villagers start to show symptoms of radiation poisoning. It turns out Data brought the radioactive debris to the village without memory of its danger.