Charlie X

"Charlie X" is the second broadcast episode of the first season of the American science fiction television series Star Trek. Written by D. C. Fontana from a story by Gene Roddenberry, and directed by Lawrence Dobkin, it first aired on September 15, 1966.

In the episode, the Enterprise picks up an unstable 17-year-old boy who spent 14 years alone on a deserted planet and lacks the training and restraint to handle his superhuman mental powers wisely.