The Tomorrow People - Season 3 - Eps 8: A Man for Emily, Part 1: The Fastest Gun
A group of aliens stop off on Earth for supplies, but since their only knowledge of Earth's culture comes from watching cowboy films, it is not long before their visit results in violence and the Tomorrow People become involved.
About The Tomorrow People

Title: The Tomorrow People
First Air Date: 1973-04-30
Last Air Date: 1979-02-19
Status: Ended
Rating: 6.6/10 (from 11 votes)
Language: EN
Seasons: 9
Total Episodes: 68
Network: ITV1
Genres: Sci-Fi & Fantasy, Drama
Production Companies: Unknown
Synopsis
Born to human parents, an apparently normal child might at some point between childhood and late adolescence experience a process called 'breaking out' and develop special paranormal abilities. These abilities include psychic powers such as telepathy, telekinesis, and teleportation. However, their psychological make-up prevents them from intentionally killing others.
Cast

Nicholas Young
John