Star Trek: The Next Generation - Shades of Gray

Seizoen: 2 - Aflevering: 22 / 49 - Eerst uitgezonden: 17 juli 1989 - Episode ID: 257861

Stardate: 42976.1 Riker is infected with an alien organism that takes over his mind. Dr. Pulaski must force Riker's mind back to a state where it can access primitive survival skills.