Odo, played by René Auberjonois, is a fictional character in the science fiction television series Star Trek: Deep Space Nine. He is a member of a shape-shifting species called Changelings and serves as the head of security for the space station Deep Space Nine on which the show is set. Intelligent, observant, and taciturn, Odo uses his unique abilities throughout the show to maintain security on the DS9 station and later aids the Bajoran people and the Federation throughout the Dominion War against his own people, the Founders.
Natasha "Tasha" Yar is a fictional character that mainly appeared in the first season of the American science fiction television series Star Trek: The Next Generation. Portrayed by Denise Crosby, Yar is chief of security aboard the Starfleet starship USS Enterprise-D and carries the rank of lieutenant. The character's concept was based upon the character of Vasquez from the film Aliens (1986). Following further development, she became known first as Tanya, and then Tasha. Crosby had auditioned for the role of Deanna Troi, while Rosalind Chao became a favorite for Tasha. After Marina Sirtis auditioned for the role, the series' creator Gene Roddenberry decided to switch the roles for the actresses, with Sirtis becoming Troi and Crosby becoming Yar. Chao would later appear on the series in a recurring role as Keiko O'Brien.
"Encounter at Farpoint" is the pilot episode and series premiere of the American science fiction television series Star Trek: The Next Generation, which premiered in syndication on September 28, 1987. It was written by D. C. Fontana and Gene Roddenberry and directed by Corey Allen. Roddenberry was the creator of Star Trek, and Fontana was a writer on the original series. It was originally aired as a two-hour TV movie, and subsequent reruns typically split the episode into two parts.
Saavik is a fictional character in the Star Trek universe. She first appeared in the film Star Trek II: The Wrath of Khan (1982) played by Kirstie Alley. Robin Curtis took over the role for Star Trek III: The Search for Spock (1984) and Star Trek IV: The Voyage Home (1986).
"The Naked Now" is the third episode of the first season of the American science-fiction television series Star Trek: The Next Generation, originally aired on October 5, 1987, in broadcast syndication in the United States. Directed by Paul Lynch, the episode had been written by D. C. Fontana, under the pseudonym of "J. Michael Bingham", with John D. F. Black also credited for his role in devising the plot's origins.
"Code of Honor" is the fourth episode of the first season of the American science fiction television series Star Trek: The Next Generation, originally aired on October 12, 1987, in broadcast syndication. The episode was written by Katharyn Powers and Michael Baron and was directed by Russ Mayberry. Mayberry was replaced part way through the filming of the episode with first assistant director Les Landau.
"Yesterday's Enterprise" is the 63rd episode of the American science fiction television series Star Trek: The Next Generation. It is the 15th episode of the third season, first airing in syndication in the week of February 19, 1990. Set in the 24th century, the series follows the adventures of the Starfleet crew of the Federation starship Enterprise-D. In this episode, the ship's crew must decide whether to send the time-travelling Enterprise-C back through a temporal rift to its certain destruction, to prevent damaging changes to their timeline.
"Angel One" is the fourteenth episode of the first season of the American science fiction television series Star Trek: The Next Generation. It was first broadcast on January 25, 1988, in the United States in broadcast syndication. It was written by Patrick Barry and was directed by Michael Ray Rhodes.
"The Arsenal of Freedom" is the twenty-first episode of the American science fiction television series Star Trek: The Next Generation, originally aired on April 11, 1988, in broadcast syndication. The teleplay was written by Richard Manning and Hans Beimler, based on a story by Beimler. The episode was directed by Les Landau.
"Skin of Evil" is the 23rd episode of the first season of the American science fiction television series Star Trek: The Next Generation, and originally aired on April 25, 1988, in broadcast syndication. The story premise was written by Joseph Stefano, and the screenplay was re-written by Hannah Louise Shearer. The episode was directed by Joseph L. Scanlan.
Star Trek: Vanguard is a series of Star Trek tie-in fiction novels set during the 2260s, or the time period concurrent with Star Trek: The Original Series. The series is written by Kevin Dilmore, David Mack, and Dayton Ward.
"Legacy" is the 80th episode of the syndicated American science fiction television series Star Trek: The Next Generation, the sixth episode of the fourth season. It marked the point at which the series surpassed the number of episodes in the original series.
"Descent" is the 26th episode of the sixth season and the first episode of the seventh season of the American science fiction television series Star Trek: The Next Generation, the 152nd and 153rd episodes overall.
"The Survivor" is the sixth episode of the first season of the American animated science fiction television series Star Trek: The Animated Series. It first aired on NBC on October 13, 1973, and was written by James Schmerer and was directed by Hal Sutherland. Schmerer pitched an idea for an episode to producer D.C. Fontana called "The Chameleon", and together with the series creator Gene Roddenberry, it was developed into the final script.
"The Mind's Eye" is the 98th episode of the American syndicated science fiction television series Star Trek: The Next Generation, the 24th episode of the fourth season. David Livingston made his directoral debut at the helm of this episode.
"Tin Man" is the 20th episode of the third season of the American science fiction television series Star Trek: The Next Generation, and the 68th episode overall. It was originally released on April 23, 1990, in broadcast syndication. It was written by Dennis Putman Bailey and David Bischoff with uncredited work by Lisa Putman White. It was based on Bailey and Bichoff's 1976 short story, and subsequent 1979 novel, Tin Woodman. Both the short story/novel and the episode are named for the Tin Woodman from L. Frank Baum's Oz books.
The Peacekeepers is a 1988 Star Trek: The Next Generation novel by Gene DeWeese. It is set at an undetermined point during the series' first season.
"Repentance" is the 159th episode of the American science fiction television series Star Trek: Voyager airing on the UPN network. It is the 13th episode of the seventh season.
Enchantress from the Stars is a young adult science fiction novel by Sylvia Engdahl published by Atheneum Books in 1970. It was her first or second book and is set in the Anthropology Service universe. Its sequel The Far Side of Evil (1971) features the same heroine, Elana, and the two are sometimes called the Elana series, although the sequel is quite different in tone.
The following outline is provided as an overview of and topical guide to Star Trek:
