The Survivor ( episode ) The " Enterprise " encounters the ship of a noted Federation philanthropist , missing for nearly five years , near the Romulan Neutral Zone . Summary . The vessel is registered to Carter Winston , who has been missing for more than five years . Captain Kirk , Spock and Dr . McCoy greet the long - lost philanthropist in the transporter room . By coincidence , his fiancée , Lieutenant Anne Nored , is serving aboard the " Enterprise " , as a part of the vessel ' s security personnel . Spock tells Winston that they will notify her as soon as they verify his identity with his identity tape s . When McCoy protests , Spock reminds him that it is standard operating procedure , along with a medical exam McCoy must perform . Winston agrees and produces the tapes . Winston ' s readings are a little off on his medical exam . McCoy makes note of it but passes it off as sickbay equipment in need of recalibration . When everything checks out Kirk says , " " It seems we ' ll have a distinguished passenger for a while . " " Immediately following his reunion with Anne , Winston tells her that he has changed and can no longer marry her , ever . Winston goes to see Kirk in his quarters about his ship , but Kirk informs him it has only scrap value . While there Winston shapeshifts and renders Kirk unconscious . Nurse Chapel can find nothing wrong with the instruments but the readings are still slightly off . McCoy notes some of the rest of the tests are off while some are not and vows he will find the answer . Winston takes Kirk ' s form , goes up to the bridge , and orders Sulu to steer the " Enterprise " into the Neutral Zone . Spock says , " " It does not seem prudent to take the risk of trespass into the zone . " " Winston / Kirk assures Spock that it is vital to proceed to the planet Rator III , as the entire population may depend on the " Enterprise " s assistance . Spock is still not comfortable with the order but Winston / Kirk insists . When the real Kirk recovers , he and Spock discover the ruse and Kirk orders the ship out of the Neutral Zone at warp 8 . After speaking to Winston / McCoy , Kirk and Spock realize he was not McCoy at all . The real McCoy wakes up on the lab floor . Kirk is sure Winston shapeshifted again and is still in the room . Kirk realizes that Winston has shapeshifted into a bio - bed . He shapeshifts out of hiding after Kirk threatens to pour orientine acid onto him . Spock states he is a Vendorian , who escapes , eludes capture , and are known for their practice of deceit as a way of life . Romulan ships , having been advised of the breach of the Neutral Zone , surround the " Enterprise . " The Romulans demand surrender . Kirk believes the Vendorian to be their spy , and refuses to surrender because they were lured there . The Vendorian , disguised as a crewman , knocks out Scott in engineering and damages the deflector shield , which requires two hours to repair . Later , the creature reveals his identity to Nored , explaining that her fiancé is dead , but since he absorbed so many emotion s from him , he can indeed love her . The Romulans attack the " Enterprise " . Realizing he has put his love in jeopardy , the Vendorian takes the form of key components in the main deflector shield around the ship . The Romulans retreat and Kirk informs the Vendorian he will stand trial but his efforts to save the ship will be considered . Nored tells him he is much like her former lover and that he will enjoy life on Earth , perhaps even together with her . After Winston has been apprehended , McCoy jokes , " " If he ' d turned into a second Spock , it would have been too much to take . " " ( This joke proves to be eerily prophetic , and anticipates . ) Spock quickly one - ups him with , " " Perhaps , but then two Dr . McCoys just might bring the level of medical efficiency on this ship up to acceptable levels . " " Memorable quotes . " " Done , tested out normal . " " " " Are you sure there is no possibility you made an error ? " " " " Well there ' s always that possibility . I ' ll go over them again if you like . " " " " Doctor , you are a man of curious habits , but I have never known you to nap on the laboratory floor . " " " " All right , Winston , you can come out now . I suggest you show yourself , Winston , or . . . whatever you are . " " " You say I ' m a man of curious habits ? Jim ' s talking to a table ! " " " This is a vial of orientine acid , Winston . It can burn through almost anything but this crystal . If you ' ve never seen it work , I ' ll demonstrate on you . " " " " Spock to bridge . Put me on ship ' s audio . All security teams , intruder alert . Repeat , intruder alert . The intruder is a Vendorian , capable of assuming any shape or identity . " " " " Lieutenant Nored , you could ' ve stopped him . Why didn ' t you fire ? " " " " I . . . I couldn ' t ! I knew he had to be the intruder , captain , but I couldn ' t harm the image of the man I loved ! " " " " Lieutenant , he is not the man you loved . " Carter Winston is " dead . " " " " I know that , too . . . now . " " " " You appear to have a propensity for trespassing in the Neutral Zone , Captain Kirk . " " " " You caught him . " " " " Acute observation , doctor . " " " " I ' m glad to see him under guard , Jim . If he ' d turned into a second Spock , it would ' ve been too much to take . " " " " Perhaps . But then two Doctor McCoys just might bring the level of medical efficiency on this ship up to acceptable levels . " " Links and references . References . 2259 ; 2264 ; 2265 ; accident report ; atom ; backup systems ; bait ; beastie ; ; bone ; " Bones " ; Cerberus ; clay pigeon ; Federation colonies ; confiscation ; ( impound ) crop failure ; crystal ; death ; deflector shield ; efficiency ; emotion ; engineering officer ; examination table ; extreme long - range sensor ; famine ; Federation ; fiancée ; fingerprint ; first officer ; guard detail ; habit ; hangar door ; hospitality ; Human ; identity check ; identity tape ; imagination ; intruder alert ; laboratory ; library computer ; license ; love ; mannerism ; marriage ; mass ; ; medical examination ; medical supply cabinet ; memory ; meteor swarm ; missing ; molecular structure ; nap ; orientine acid ; outcast ; phaser ; philanthropist ; photon torpedo ; power supply ; propulsion unit ; quarantine ; quarters ; Rator III ; red alert ; regulation s ; report ; Romulan battle cruiser ; Romulan Neutral Zone ; Romulan s ; Romulan battle cruiser ; school ; secondary propulsion system ; security detail ; senior medical officer ; shuttlebay ; skin graft ; space trader ; spray bottle ; spy ; surgery ; table ; tentacle ; trading vessel ; trial ; Vendor ; Vendorian s ; vial ; voiceprint ; war ; Winston ' s trading vessel ; wreck ; yellow alert