"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. Set in the 24th century, the series follows the adventures of the Starfleet crew of the Federation starship Enterprise-D. In this episode, telepath Tam Elbrun (Harry Groener) joins the crew to investigate a bio ship detected near a star about to go supernova. As the crew investigates, the Romulans threaten the Enterprise and the creature, Gomtuu, and Elbrun boards it with Lt. Commander Data (Brent Spiner). As the star is about to explode, Gomtuu sends Data back to the Enterprise and the two ships out of the system. Gomtuu and Elbrun leave together as the star goes supernova. The spec script was chosen as the crew believed it could go into production quickly. After purchasing it, the production of this episode began a week later. Groener guest starred as Elbrun, the first male Betazoid seen on the show. Michael Cavanaugh appeared as Captain Robert DeSoto, a character that was mentioned in "Encounter at Farpoint" and later in the franchise. The design of Gomtuu was based on an element from The Adventures of Buckaroo Banzai Across the 8th Dimension, while the chair creation special effect was made using reverse motion. "Tin Man" received Nielsen ratings of 10.2 percent. Critical reception has been mixed; while it has been listed in the top 70 of the best episodes of the franchise, other reviewers have called the plot predictable and trite. Plot The Enterprise brings aboard the Betazoid Federation emissary Tam Elbrun (Harry Groener), and takes him to a distant star system. Elbrun, whom Deanna Troi (Marina Sirtis) previously knew when he was a mental patient, has a history of mental instability due to his overpoweringly strong telepathic capabilities, but his unique skills are used for first contact situations with alien life. However, some of the crew including William Riker mistrust him, due to an incident on another first contact situation he was involved