Star Trek: The Next Generation S02E22 - Shades of Gray
Star Trek: The Next Generation (1987)
S02E22 Shades of Gray
Episode Overview
Stardate: 42976.1. Riker becomes host to a parasitic alien entity that seizes control of his thoughts. In a race against time, Dr. Pulaski is tasked with guiding Riker's consciousness back to a more primal state, enabling him to tap into fundamental survival instincts.