Wolf in the Fold ( episode ) Scott is suspected of killing several women while on shore leave on Argelius II . However , a more sinister force may provide a connection between this murder and many previous around the galaxy , including a rampage on ancient Earth . Summary . Teaser . Montgomery Scott is on medical leave on Argelius II , accompanied by Captain Kirk and Doctor McCoy , following a serious head injury caused by a female crewmember ' s error . McCoy believes that the sexually permissive Argelian culture will cure Scott ' s " total resentment towards women . " On the planet , they are gathered together in a cafe , watching the seductive dance of an , resembling belly dance or Middle Eastern dances of Earth . McCoy states that this is a completely hedonistic society . Scott especially is intrigued by the dancer . After she is done with her performance , she sits down with them at their table . Scott suggests they go for a walk in the fog and she joyfully agrees . Kirk and McCoy are glad they were able to help Scott recuperate in this manner . Having set Scott up properly , Kirk suggests they go to another place across town where the women are apparently equally permissive . McCoy enthusiastically agrees . When Kirk and McCoy enter the densely fogged alley , they hear a woman ' s scream and soon find out that it is the female dancer who left with Scott . She has been stabbed a dozen times and is dead . Nearby , they find Scott leaning against the wall , moaning in agony , with a knife covered in blood in his hand . Act One . Hengist , who is not a native Argelian , but from Rigel IV , confesses himself " speechless " about the incident , because Argelius is the last place in the galaxy that one would associate with violent crime . Hengist begins interrogating Scott , who doesn ' t seem to recall at all what has happened to him or the woman . All he remembers is that they were walking in the fog , that he was up ahead , trying to lead the way and then suddenly heard her scream and recalls nothing after that . Kirk presses the issue , insisting that Scott remember what happened , but McCoy holds him back , asking him to be a little more considerate , especially because of the recent trauma Scott suffered . Kirk , however , states that he is facing a dilemma as a diplomat . This crime happened under Argelian jurisdiction and if the Argelians want to arrest Scott , try him , and even convict and sentence him , Kirk must go along with it . Hengist points out that Scott ' s fingerprints are all over the murder weapon . Kirk replies that there were other people in the cafe and that several of them left just before Scott and the girl did . Hengist says that they are actually looking for those people and trying to question them . Kirk asks what the law in this case is , and the Prefect Jaris , who just entered the room with his wife Sybo , states that the law of Argelius is love . Jaris says that they are capable of learning the truth in such matters through the Argelian empathic contact , a sort of seance . He invites Kirk and his men to his home where , with the aid of his wife who can initiate such an empathic bond , they can learn the truth . Despite the objections of Hengist , they decide to proceed as proposed by the Prefect . In the meantime , the beams down Lieutenant Karen Tracy , who is asked to perform a 24 - hour memory check of Scott with a psycho - tricorder . McCoy and Kirk discuss the situation . McCoy says that under normal circumstances Scott wouldn ' t have done such a thing and suspects that maybe it was some form of hysterical amnesia ; repressed memory of an event too terrible to recall . The Prefect ' s wife , after having prepared herself for the ceremony , returns . She asks for the murder weapon , as she can get psychic impressions from inanimate objects . At this point , they discover the knife is missing , and they hear a loud scream from the other room . Kirk and McCoy find Lieutenant Tracy lying dead , having been stabbed over and over again , while , once again , Scott lies unconscious with the bloody knife in his hands . Act Two . When Scott regains consciousness , he is disoriented and doesn ' t remember what happened . Kirk explains that Lieutenant Tracy is dead . Scott says that all he remembers is her taking the readings and then nothing else after that . He cries that he really cannot remember anything . Hengist returns with two men who were at the cafe at the night of the first murder . Tark , a musician who played for Kara ' s dance at the cafe , was her father ; they ' d put on shows together since Kara was a child . The second , Morla , was her fiancé . The father accuses Morla of behaving disgracefully and says he was extremely jealous . Morla reluctantly admits it . When he saw her going to the spacemen ' s table he couldn ' t stand to watch it , so he angrily left and went home . Kirk points out that jealousy has often been a motive for murder . The Prefect agrees , stating that this is why the emotion is so strongly disapproved of on Argelius . Morla protests that he did not kill anyone . Kirk is agitated and impatient , pressing the issue more and more , trying to prove Scott ' s innocence , but Hengist reminds him that in both cases , it was Scott who was found over the bodies with the murder weapon . When Sybo signals that she is ready , they begin the ceremony . Kirk wants Jaris to have the room sealed so that no one can leave or enter . Scott is not happy about this , asking if his neck is going to have to depend on " some spooky mumbo jumbo " . Kirk receives a message from Spock through his communicator who informs him that while interesting , the technique of the Argelian empathic contact is truly not sound enough to risk a man ' s life . He suggests beaming Scott back to the ship and use computers to find out the truth . Kirk says that these people have their own customs and laws and that while they are there , they are subject to them . He emphasizes that importance of resolving this matter according to Argelian law . They gather around the ceremonial altar of truth with a flame burning at its center . Sybo closes her eyes , saying that there is something terrible there , filled with anger , hatred , and fear . She moans that there is monstrous , terrible evil there , hater of all that lives , hater of women , a hunger that is strong and never dies . It has been called Beratis , Kesla , Redjac . While she keeps chanting and repeating these words , the lights suddenly go off and another terrible scream is heard . When the lights come back again , Scott is standing behind Sybo , who falls over , revealing a knife stabbed in her back . Scott ' s hands are bloody and he looks petrified . He cannot answer questions ; his mind is completely blank . McCoy doesn ' t care what the circumstances indicate , he knows that Scott is not the killer . Kirk reminds him that Scott recently had a head injury ( caused by a woman ) just before their arrival to Argelius , and wonders if that could be a factor . Scott insists he did not kill the women ; Hengist points out that by his own admission , Scott doesn ' t remember what he did . Kirk says that on the " Enterprise " they have a reliable method for recording Scott ' s conscious and subconscious mind . Jaris agrees to go to the ship , stating that whoever is guilty will face the ancient penalty for murder , which was death by slow torture . Act Three . On the " Enterprise " , Kirk explains the procedure and they begin . Scott is asked a series of test and identifying questions . The computer confirms the accuracy of Scott ' s testimony about not remembering what happened . Scott points out that he didn ' t black out when Sybo was killed : they were holding hands and when the lights went off , the circle was broken and he heard the lady scream . He went towards her but remembers that something was in his way – something cold emitting a " " stinking draft " " , according to Scott . The computer again confirms the veracity of Scott ' s testimony . Hengist keeps pointing out to the fact that Scott was standing behind Sybo , with bloody hands . Kirk proceeds to ask Scott about having killed Kara and Tracy , and in both cases Scott says that he doesn ' t remember . Again , the computer confirms the veracity in Scott ' s testimony . Hengist is still not convinced , so Kirk suggests that after they are done taking the testimony here , they will run a psychotricorder analysis of Scott ' s memory to have a complete record . Hengist is still not satisfied with this answer , but Jaris decides to give this a fair chance . After the computer also verifies Morla ' s innocence and the accuracy of his statements , Kirk wonders to Spock if they are going about this the wrong way . Sybo , after all , did sense something evil down there . They go through her words again , trying to remember what exactly she said . They run the names and words Sybo mentioned through the computer which identifies Redjac as Red Jack – " Jack the Ripper " – mass murderer of women on Earth . Everyone is taken aback because Jack the Ripper lived hundreds of years ago and couldn ' t possibly have survived all these centuries . They conclude that if it is impossible for it to be Human , it has to be something else . Bones points out that this entity , whatever it is , not only feeds on death , but also fear . Spock notes that deriving sustenance from emotion is not unknown in the galaxy , such as the Drella of Alpha Carinae V – and fear is one of the strongest and most potent of the emotions . Perhaps , he says , there are more women victims than men because " women are more easily and more deeply terrified , generating more sheer horror than the male of the species . " Hengist loses patience , stating that all this has gone far enough , unwilling to let the prime suspect get away so they can chase ghosts . Spock asks the computer if an entity with such discussed limits could exist within this Galaxy . The computer says that such an entity could in fact exist in both corporeal and incorporeal form . Spock points out that " Jack the Ripper " was never identified on Earth . He suggests the possibility of a hypnotic screen which blinds all but the victim to the presence of the killer . After much debate , investigation and speculation , they conclude the true murderer to be a malicious incorporeal entity that feeds on fear . It once took the form of " Jack the Ripper " on 19th century Earth and then traveled from planet to planet , assuming humanoid bodies to murder women and to feed on their fear . None of those murders were ever solved . The other two names Sybo mentioned before she died are identified as Kesla , a mass murderer on Deneb II who was never caught , and Beratis of Rigel IV – the murders on Rigel IV having occurred just a solar year ago . Finally , the reason for Hengist ' s opposition to this line of inquiry is revealed – he is the current host of the murdering entity . According to Spock , an entity which feeds on fear and terror would find a perfect hunting ground on Argelius – a planet without violence , where the inhabitants are as peaceful as sheep and the entity a hungry wolf in that fold . The entity is forced out of Hengist ' s body , but it moves into the " Enterprise " s computer systems and threatens to slowly murder the crew and disable vital systems . Act Four . Knowing that the entity feeds on fear and terror , Kirk asks the crew through the ship ' s intercom to remain calm . Dr . McCoy gives everyone ( except Kirk and Spock , who " will take their chances " ) a tranquilizer to deprive the entity of the fear on which it feeds . Spock forces the entity out of the computer by ordering it to compute , at top priority , pi to the last digit – a task it can never complete . They succeed in getting the being out of the computer , but it then briefly possesses Jaris before managing to reanimate Hengist ' s body and threatening to kill Yeoman Tankris . The attempt fails , as the tranquilized yeoman finds the situation more amusing than terrifying , and Kirk manages to save her from Hengist before Spock gives him a dose of tranquilizer . Kirk orders Hengist , and with him the entity , beamed into space " at maximum dispersion " , spreading it into billions of harmless atom s floating forever in open space . Relieved they have vanquished the creature , Kirk then amusingly looks at the rest of his crew , who are still happy from the tranquilizer ; and comments to Spock how , for five to six hours , they have the " happiest crew " in space . Memorable quotes . " " Now , no one has to tell an old Aberdeen pub crawler how to applaud , captain ! " " " " Captain , you mean my neck ' s gonna have to depend on some spooky mumbo - jumbo ? " " " " In the strict scientific sense , doctor , we all feed on death . Even vegetarians . " " " " She ' s dead , Jim – just like the . " " " " Stabbed over and over again . " " " " The entity would be as a hungry wolf in that fold . " " " " I ' ve got some stuff that would tranquilize an active volcano . " " " " This is the first time I ' ve heard a malfunction threaten us . " " " " Whoever he is , he sure talks gloomy ! " " " " Above all : don ' t be afraid . " " " " With an armful of this stuff . . . I wouldn ' t be afraid of a supernova ! " " " " Computer , this is a class A compulsory directive . Compute to the last digit , the value of pi . " " " " Well Mister Spock , for the next five or six hours , we ' re going to have the happiest crew in space . Of course , we won ' t get much work done . " " " " You seem very . . . " happy " about the whole thing . . . " " " " Why not ? For a while there , I didn ' t know whether I was innocent or guilty ! " " " " The viewer was a riot of changing colors . Figures began to emerge from them . Serpents writhed through pentagons . Naked women , hair streaming behind them , rode astride the shaggy backs of goats . Horned beasts pranced with toads . Rivers boiled , steaming . Above them , embraced bodies drifted down fiery winds . Human shoulders , pinioned under rocks , lifted pleading arms . Then the red glow , shedding its bloody mist over the screen , gave way to the deathly whiteness of a cold , unending snow . Up from the glacial landscape rose a towering three - headed shape , its mouth agape with gusts of silent laughter . A cross , upturned , appeared beside it . The shape crawled up it , suspending itself upon it in an unspeakable travesty of the crucifixion . Its vast , leathery wings unfolded . . . " " Background information . Remastered information . The remastered version of " Wolf in the Fold " aired in many North American markets during the weekend of . Few adjustments were made to the episode except for all - new shots of the " Enterprise " in orbit of Argelius II , itself now bearing visible city lights of the surface . The visual of Redjac on the triscreen was left intact . Links and references . References . 1932 ; 1974 ; 2066 ; 2105 ; 2156 ; 2266 ; Aberdeen ; Alpha Carinae V ; Alpha Eridani II ; Alpha Eridani victims ; Alpha Majoris I ; anger ; angle ; Argelian ; Argelian empathic contact ; Argelius II ; Argelius II victims ; Argus River ; Beings that feed on emotion ; Beratis ; ; " Bones " ; boridium ; bypass control circuit ; Cantaba Street ; carving ; China ; class - A compulsory directive ; cloud creature ; compulsory scan unit ; concussion ; Deneb II ; Deneb II victims ; Drella ; Earth ; English language ; fairy tale ; fear ; Female who caused Scott ' s accident ; folk art ; ghost ; goblin ; Great Awakening ; hedonism ; Heliopolis ; ; inanimate object ; investigator ; Jack the Ripper ; Kesla ; Kiev ; knitting ; life support system s ; linguistics bank ; love ; Martian colonies ; MArtian colonies victims ; medical leave ; medical technician ( aka psychotech ) ; Mellitus ; Milky Way Galaxy ; murinite ; pi ; prefect ; priestess ; prostitution ; psycho - tricorder ; Red Jack ; Red Jack victims on Rigel IV ; Redjac victims in China ; Redjac victims in England ; Redjac victims in USSR ; Rigel IV ; sedative ; serial killer ; serial number ; Shanghai ; sheep ; slaughterhouse ; solar year ; suffocation ; Sybo ' s priestess ancestors ; synonym ; tricorder ; USSR ; vegetarian ; verifier ; volcano ; Vulcan neck pinch ; wolf