The Enterprise sociologist who accompanies Kirk's landing party to Beta III and remains behind to help its people adjust after the computer Landru is destroyed.
Lindstrom is a sociologist aboard the Enterprise in the first-season Original Series episode The Return of the Archons, played by Christopher Held.
He beams down in period dress with Kirk, Spock, McCoy and others to investigate the disappearance of the USS Archon a century earlier and the strange behaviour of Sulu. The party witnesses the Red Hour, when the placid townspeople erupt into violence, and Lindstrom is outraged that Reger does nothing when his daughter Tula is carried off.
After Kirk and Spock argue the machine Landru into destroying itself, Lindstrom stays on the planet with a team of specialists to guide its society back to a normal human footing. His last report tells a pleased Kirk that the inhabitants are already quarrelling.