All 26 episodes from the third season of the classic science fiction series that boldly goes where no man has gone before. In 'Spock's Brain', the Enterprise's indomitable Vulcan science officer has his brain stolen by a beautiful and mysterious female humanoid. In 'The Enterprise Incident', a moody Kirk (William Shatner) orders the Enterprise into the Romulan Neutral Zone. In 'The Paradise Syndrome', Kirk, Spock (Leonard Nimoy) and McCoy (DeForest Kelley) beam down to a planet which is a precise duplicate of Earth. While on the planet surface, the captain is stranded, rendered unconscious and suffers a severe case of amnesia. 'And the Children Shall Lead' sees Kirk and crew answering a distress call from the planet Triacus, only to find all the adults dead and the children calmly indifferent. In 'Is There in Truth No Beauty?', a Medusan ambassador boards the Enterprise. The Medusan appearance is so fearful that it can drive men insane - and Spock is the unfortunate who happens to glimpse the ambassador. In 'Spectre of the Gun', Kirk ignores warnings from an alien culture, so they punish him by transporting him and some of his fellow officers to a bizarre Wild West shootout. 'Day of the Dove' sees an alien entity which breeds on hatred attempting to spark off a war between the Klingons and the Federation. In 'For the World is Hollow and I Have Touched the Sky', Doctor McCoy discovers that he has a terminal illness, and submits to enslavement by an alien queen. In 'The Tholian Web', Kirk is stranded on the devastated USS Defiant, while the Enterprise is trapped in another universe. In 'Plato's Stepchildren', the crew of the Enterprise are enslaved by telepathic aliens when they answer a distress call. In 'Wink of an Eye', the crew of the Enterprise uncover a mystery concerning an abandoned city and disappearing crew-members. 'The Empath' sees Kirk, Spock and McCoy being tortured by aliens on a doomed planet. In 'Elaan of Troyius', the Enterprise crew find themselves working for peace between two warring planets. They carry with them a gift to cement the peace - but she is a wild, wild woman. In 'Whom Gods Destroy', the Enterprise delivers a new drug for the insane to a lunatic asylum, only for Kirk and Spock to be captured by the inmates. In 'Let That Be Your Last Battlefield', the Enterprise is en route to a rescue mission when the crew finds a stolen Federation shuttle craft. They recover the craft and the hijacker - and find themselves in the middle of a feud between bigoted aliens. 'The Mark of Gideon' sees Kirk's crew go missing after he beams down to the planet of the secretive Gideons. In 'That Which Survives', a beautiful young woman appears on the Enterprise and warns the crew not to travel to the nearby planet. However, her warning is too late to stop an away-team being stranded on the geologically unstable world. In 'The Lights of Zetar', Lieutenant Mira Romaine (Jan Shutan) encounters a dazzling natural phenomenon. In 'Requiem for Methuselah', Kirk has to beam to a nearby planet to find the cure for a disease that is wiping out the crew. On the planet's surface he meets a mysterious, immortal genius. In 'The Way to Eden', the crew come across a stolen space ship filled with space hippies. In 'The Cloud Minders', the Enterprise is sent on a mercy mission to recover a drug that will aid a plagued planet. Unfortunately, the inhabitants of the planet where the vital drug is found are very unhelpful. In 'The Savage Curtain', Starfleet order an investigation into a persistent space legend. When the crew of the Enterprise arrive on the scene, they are scanned and then greeted by Abraham Lincoln (Lee Bergere). In 'All Our Yesterdays', Kirk, Spock and McCoy find themselves living in the past of a doomed planet that they were trying to evacuate. Finally, in 'Turnabout Intruder', the last original episode, Kirk finds a former acquaintance amongst the survivors of a mysterious catastrophe.