More Tribbles, More Troubles 1A 10-06-73 5392.4 Transporting quadrotriticale to Sherman's Planet (now in the midst of a second famine), the Enterprise rescues Cyrano Jones from a Klingon warship. Jones' new tribbles still cause trouble. David Gerrold ---- The Infinite Vulcan 2A 10-20-73 5554.4 An Enterprise landing party discovers a clone of a long-dead Terran scientist, who wishes to clone Spock to use as a galactic peacemaker. Walter Koenig ---- Yesteryear 3A 09-15-73 5373.4 Exploring Orion's past using the Guardian of Forever, distorts the current timeline, so that Spock dies at age 7. Spock must journey back to meet his past self, and save him. D.C. Fontana ---- Beyond the Farthest Star 4A 12-22-73 5521.3 Pulled off-course by Questar M-17, an imploded negative star mass, the Enterprise discovers an evil entity which takes control of the ship. Samuel A. Peeples ---- The Survivor 5A 10-13-73 5143.3 Carter Winston, missing for five years, is found in a damaged craft. It is soon discovered that this creature is really a shape-changing Vendorian, who takes the ship into the Neutral Zone. James Schmerer ---- The Lorelei Signal 6A 09-29-73 5483.7 Kirk, Spock, and McCoy are captured by a group of women, who drain their life energies. They must be rescued by a female landing party, led by Uhura. Margaret Armen ---- One of Our Planets is Missing 7A 09-22-73 5371.3 A huge planet-eating cloud is headed for Mantilles, home to 82 million people. Trying to stop the cloud, the Enterprise is pulled inside. Marc Daniels ---- Mudd's Passion 8A 11-10-73 4978.5 Kirk finds Harry Mudd selling love potion to miners. After bringing him onboard, he persuades Christine Chapel to try the potion on Spock, then kidnaps her. Stephen Kandel ---- The Magicks of Megas-Tu 9A 10-27-73 1254.4 The Enterprise is propelled into another dimension where magic functions as surely as science does in their own. Larry Brody ---- Time Trap 10A 11-24-73 5267.2 The Enterprise and Klingon cruiser Klothos become trapped in the Delta Triangle, where they find a graveyard of ships, and the descendants of the ships' crews. Joyce Perry ---- Slaver Weapon 11A 12-15-73 4187.3 Spock, Uhura, and Sulu, aboard shuttlecraft Copernicus, are carrying a Slaver stasis box, which gets stolen by the violent, catlike Kzin, who capture the three. Larry Niven ---- Jihad 12A 01-13-74 5683.1 Kirk and crew must find a holy relic, the "Soul of Skorr", to prevent a galaxy-wide holy war. Stephen Kandel ---- The Ambergris Element 13A 12-01-73 5499.9 Kirk and Spock are transformed into "water breathers" by the Aquans, an underwater race. Now, they must reverse this process, before the older, distrustful Aquans kill them. Margaret Armen ---- Once Upon a Planet 14A 11-03-73 5591.2 Upon return to the "Shore Leave" planet, Kirk and co. find that The Keeper has died, and now the planet's computer has become hostile, resenting its role as a servant. Len Jenson, Chuck Menville ---- The Terratin Incident 15A 11-17-73 5577.3 The Enterprise, responding to a strange distress signal, is hit by a bolt of energy, which causes all living matter on the ship to shrink. Paul Schneider ---- The Eye of the Beholder 16A 01-05-74 5501.2 The Enterprise locates a missing ship, Ariel, orbiting Lactra VII. The crew beam down to the planet, and are captured as zoo specimens by the native slug-like creatures. David P. Harmon ---- Bem 17A 09-14-74 7403.6 Commander Ari bn Bem is imprisoned by natives on Delta Theta III. Kirk defies a voice claiming to be a god, to carry on a search for him. David Gerrold ---- Albatross 18A 09-28-74 5275.6 McCoy is arrested for causing a plague on the planet Dramia II 19 years ago. Bones finds a cure and is honored by the Dramians and the Federation. Dario Finelli ---- The Pirates of Orion 19A 09-07-74 6334.1 Spock contracts a disease deadly to Vulcans (choriocytosis), and a supply of Strobolin, the disease's only antidote, is stolen by Orion pirates. Howard Weinstein ---- Practical Joker 20A 09-21-74 3183.3 Being chased by Romulan warships, the Enterprise escapes by entering a cloudlike energy field, which possesses the ship's computer system, causing a variety of strange events. Chuck Menville ---- How Sharper Than a Serpent's Tooth 21A 10-05-74 6063.4 The Enterprise is captured by Kulkukan, an ancient astronaut worshiped as a god on Earth centuries earlier. Russell Bates, David Wise ---- The Counter-Clock Incident 22A 10-12-74 6770.3 With aging Commodore Robert April and his wife onboard, the Enterprise gets pulled into a reversed universe. The crew is turned to children, and April must assume command. John Culver (Fred Bronson) ----