The Web of Fear ( TV story ) The Web of Fear was the fifth story of season 5 of " Doctor Who " . It saw the return of the Great Intelligence and its robotic Yeti , as well as Professor Edward Travers . Perhaps most notably , however , it featured the first appearance of Colonel — later Brigadier — Lethbridge - Stewart , played by Nicholas Courtney . UNIT , however , was not introduced until his next appearance , in " The Invasion " . Before 2013 , all but the first episode of the serial were missing from the BBC archive . In October of that year , the remainder of the episodes ( with the exception of episode three ) , as well as those of " The Enemy of the World " , were returned , having been located in Nigeria . The third episode remains missing , with only loose reconstructions and the recorded audio track in the BBC ' s possession . Synopsis . The TARDIS narrowly avoids becoming engulfed in a cobwebby substance in space . It arrives in the London Underground railway system , the tunnel s of which are being overrun by the web and by the Great Intelligence ' s robot Yeti . The time travel lers learn this crisis was precipitated when Professor Travers , whom they first met in the Himalayas some forty years earlier , accidentally caused one of the Yeti to be reactivated , opening the way for the Intelligence to invade again . The travellers work alongside army forces — led initially by Captain Knight , and then by Colonel Lethbridge - Stewart — as they battle the alien menace , hampered by the fact that one of their number has fallen under the Intelligence ' s influence and is a traitor in their midst . Plot . Episode 1 . The TARDIS continues in flight with the doors open , while the evil Salamander has been ejected into space and time . Jamie flings himself onto the console and activates the door control , nearly being sucked out himself . The Doctor goes to pilot the ship . Jamie mocks him for not being able to properly control the TARDIS . The Doctor intends to prove him wrong . In the home of Julius Silverstein , amidst his private collection of artefacts , Anne Travers returns from America to meet with her agitated father , Professor Travers . Travers pleads with Silverstein to let him take ( or buy ) back the Yeti he sold to him thirty years ago , stating that it is dangerous . Silverstein refuses . The Professor claims to have recently reactivated a control sphere , which has since disappeared . Anne suspects his senility is playing tricks on him . She takes her father away at Silverstein ' s urging . As Silverstein closes his home for the night , the control sphere breaks through a window and reconnects with the Yeti . As it metamorphoses into a glowing - eyed monster , Silverstein is attacked ; he cowers in terror . In the TARDIS , Jamie tries to convince the Doctor that a light on the console is flashing ; the Doctor dismisses it . The Doctor tells Jamie that the light only flashes when they are landing . Victoria notices the light too , and when the Doctor finally sees it for himself , the machine emits landing sounds . Strangely , the scanner reveals they are suspended in space , and , as they watch , the scanner picture ( and the TARDIS itself ) is enveloped by a web - like substance . In an underground fortress , Captain Knight is being interviewed about an apparently fallen comrade , Colonel Pemberton , by Harold Chorley of London Television . As the interview concludes , Professor Travers is ushered in . Knight is badgered by the Professor . He explains that Anne asked for him to be brought in . When Knight leaves , the Professor begins badgering Chorley . Chorley attempts to interview him about the " scientific section " and finding " a solution to the problem " , to which Travers opines that the whole of London , if not the whole of England , might be completely wiped out . The Doctor has rigged up a device . As the web lessens , he plugs it into the console and throws the switch on the device . The TARDIS emits a screeching sound and lurches , knocking the Doctor and his colleagues to the floor . The Doctor announces he has landed the ship about half a mile away from where they were expected , eluding their captors for the moment . The TARDIS having landed , they emerge in a dark tunnel with bars on the edge . Jamie suspects it ' s a prison , while the Doctor speculates it may be the dungeon of a castle . As they explore , they find a trench and a fire extinguisher . They then discover a sign revealing they are in the London Underground station at Covent Garden . They head to the surface . The entrance gate to the station at the top of the stairs is closed . When Jamie attempts to rouse a sleeping man just outside , the man falls , dead and covered with web . The newsstand outside reads , " Londoners Flee ! Menace Spreads ! " Returning to the platform , Jamie hastily jumps onto the tracks . The Doctor quickly and thankfully ascertains that the current which would have electrocuted Jamie is off . The three walk along the tracks into the tunnel , noticing that trains have not been running for some time . They discover a power cable and are forced to hide as three soldiers ( Staff Sergeant Arnold , Corporal Blake and Craftsman Weams ) appear , letting out more cable from a large spool . The Doctor asks his friends to follow the soldiers at a distance while he finds where the cables lead . The soldiers stop for a rest . As Jamie and she pursue them , Victoria is startled by walking into a cobweb and cannot stifle a scream . The soldiers , upon hearing this , ambush and capture Jamie and Victoria . The Doctor reaches the Charing Cross platform , on which several crates of explosives are connected to the cables . As he investigates , he hears a familiar bleeping sound . He ducks onto the tracks and hides under the platform as a Yeti emerges . Corporal Lane cannot raise communications with a truck at Holborn . Anne enters with a repaired blast recorder , and Knight is only too pleased to give her a hand . Chorley enters , complaining of Professor Travers ' obstructiveness , but is ushered out by Knight . Meanwhile , the Doctor must sit tight as a second Yeti arrives on the platform . Both Yeti cover the explosives in web , using a strange kind of gun . As Knight continues to set his cap at Anne Travers , Arnold returns with the cables ready to connect for the demolition job and reports the two captured youngsters . Knight is entirely nonplussed , but Anne pushes to make sure there ' s no one else in the tunnel before it ' s blown up . Arnold takes Jamie and Victoria into the common room and questions them . Jamie makes a snap decision to deny they were with anyone else . Knight comes down to check , at which point Arnold says that the coast is clear , and Knight rushes off . Jamie asks what all that was about , and Arnold tells them . Victoria immediately explains about the Doctor . However , it is too late — Knight has triggered the bomb . With the Yeti gone , the Doctor is closely examining the web - covered crates . As the bombs are detonated , the boxes glow and flash from underneath the web . The Doctor is thrown from the platform . Episode 2 . Jamie and Victoria wait in their makeshift prison ( the common room at the fortress ) , Jamie berating himself up for risking the Doctor ' s life . Arnold reports to Knight about the Doctor . Arnold is dispatched to investigate as Weams reports that the blast recorder that Anne repaired isn ' t working : it hasn ' t recorded a blast . Weams suggests sabotage by the Doctor , and Knight goes to interrogate the youngsters further . As Knight , Anne , and Chorley question Jamie and Victoria , Jamie in turn tries to get someone to tell them where they are and what ' s going on . Weams interrupts to report contact is reestablished with Holborn , but it sounds like they ' re in trouble . Knight asks if it ' s a Yeti and leaves with Weams . Jamie overhears the word " Yeti " and looks askance at Victoria . Lane reports firing heard at Holborn . They overhear what sounds like a Yeti attack , and the line goes dead . Knight collects some soldiers and goes out to investigate ; Chorley elects to stay behind . Arnold and Corporal Blake discover at Charing Cross the explosives ' shattered crates covered in web . With no sign of the Doctor , they note the distinct lack of any blast damage . Back at the fortress , Travers is working on a control sphere when Anne tells him of the new arrivals who know so much about the Yeti — even the fact that they are robots , something that has been suppressed from the public . Travers rushes off . Jamie and Victoria suspect it must have been the Great Intelligence that attempted to capture them in space . Travers bursts in and questions them , but Victoria recognises the 40 - years - older man whom they met in Tibet in 1935 . Jamie and Travers soon follow suit . Jamie and Victoria explain the danger that the Doctor is in . Travers takes Jamie to find out any news about the Doctor , while Victoria is left to explain to Anne how all this is possible . They rush upstairs to find Arnold . Arnold tells Jamie and Travers what he knows and his suspicions about the Doctor . Travers stands up for the Doctor . Jamie goads Arnold into taking him out in search of the Doctor . Victoria has just about convinced Anne of the veracity of their story when Chorley enters and picks up his typewriter , in its case , to work on a story about the Doctor . Anne regards him with contempt , calling him a " sensation - monger " working for the " gutter press . " Chorley presses Victoria for more information and tells her that Jamie has gone back into the tunnels . On the way back from Holborn , Knight and Private Thompson construct a barricade across the tunnel from explosives recovered from the dead ammo detail . Lane and Privates O ' Brien and Cocksey perform a rear - guard action but are attacked by Yeti . As they gradually retreat towards the barricade , Cocksey tries to attack a Yeti but is beaten to death by it . O ' Brien ' s rifle jams , and he is smothered in web , soon dead . Arnold and Jamie meet Thompson , Knight and Lane . The Yetis use their web guns to cover the explosives . Knight tries to shoot the barricade to blow up the tunnel ; the blast is contained by the web , which pulsates and then allows the Yeti to pass through . They are trapped by Yeti from the other end of the tunnel and are held prisoner . Anne questions Travers on whether she believes the story of the Doctor and his TARDIS before speculating on the curious fact that every time he ' s met the Yeti , he ' s met the Doctor — eventually stating that he must be embroiled somehow . Before he can refute this assertion , Victoria returns with tea , having overheard the conversation . She quickly excuses herself , after which Professor Travers convinces Anne of the Doctor ' s innocence . alien s , whilst the other thinks they must be part of some kind of bacteria l weapon . They also talk how to stop a Yeti : a bullet directly between the eyes , or a grenade . Their attention is soon drawn to an electronic illuminated map board in the Ops Room , where they see that the web fungus is advancing through the tunnels for the first time in three weeks . They bring Travers , Anne , and Chorley to see , and Chorley again starts to blame the Doctor and his colleagues for this sudden burst . Blake notices that there ' s no sign of Victoria in the fortress . She has slipped away into the underground tunnels to find the Doctor and tell him of Anne ' s suspicions . Chorley says this proves his belief . As Jamie , Arnold , Knight , and company return through the tunnels , they hear someone approaching ; oddly , the man is singing in Welsh . They ambush the soldier , who presents himself as Evans , the driver of the ammunition truck to Holborn . He reports seeing the web advancing and a Yeti carrying a glass - like pyramid at King ' s Cross tube station moving ahead of the web . Jamie excitedly tells the men that if they destroyed that , it would knock out the Intelligence , and he insists on going there and continuing the search for the Doctor . Evans volunteers to go with him as the rest of the men return to the fortress , but as Jamie thanks Evans , Evans assures him that he ' ll escape the first chance he gets . Consulting a map , they decide to move to Tower Hill . Travers is beating down arguments for evacuation of the base , predominantly led by Chorley , when Knight and his party arrive at the fortress and are brought up to date . Knight shuts down any talk of escape . All of the Circle line has been consumed by the web now , with the exception of Monument . As they arrive at Monument , Evans stops Jamie . They hear a dull noise echoing through the tunnel . They look up to see the web approaching . They double back only to find more of the web cutting of their escape . As they await their death , they hear a screeching noise and are forced to cover their ears . Episode 3 . Out of the web advances a Yeti carrying a pyramid . Jamie gets Evans to shoot the pyramid , which makes the pyramid explode and the Yeti become immobile , but the web continues to advance . They make a dash for an archway and escape . Meanwhile , Victoria finds the Doctor in the tunnels , accompanied by a Colonel Lethbridge - Stewart . She tells the Colonel about the fortress at Goodge Street , and , at his prompting , tells the Doctor about the presence of Travers and his apparent suspicions about the Doctor . The Colonel escorts them to the fortress . With the Circle Line completely cut off and the fortress hemmed in , Knight is informed of the return of the Doctor and Victoria and the arrival of the Colonel . Knight goes down to talk to his new guests . In the common room , the Doctor calms Victoria and says that the Colonel hasn ' t harmed him in any way . When Knight enters , the Colonel presents his papers of authorisation and tells Knight that he is Colonel Pemberton ' s replacement . The Colonel was part of the attacked ammunition party at Holborn , and Knight mentions to him that driver Evans survived also , still not quite certain if his new C . O . is the real thing . Travers bursts in and , after a happy reunion , takes the Doctor and Victoria to the lab . The Colonel questions who is actually in charge of the base . Once away from army ears , the Doctor tries to confirm that suspicions are not focused on him , as Victoria had suggested . Travers rubbishes this , and Anne owns up to it being an idle thought of her own . They muse about the Great Intelligence and its reasons for trapping the TARDIS , while Victoria worries about Jamie . Meanwhile , Jamie and Evans arrive at St Paul ' s tube station . At the same time , Chorley is arguing with Arnold about trying to escape , saying his reports to the outside world are important . Arnold dismisses any thought of getting through the web but says there is a door that leads directly up to the surface . Chorley goes to investigate . In the lab , Travers tells the Doctor about reactivating a control sphere , which must have allowed the Great Intelligence to zone back in on the spheres and the Yeti . Knight collects them all for a briefing to be given in the common room . Victoria asks if there is any news on Jamie ; Knight is sorry that there isn ' t . Evans plans to escape at the next station , Chancery Lane , hoping to find his lorry and get out of town . Jamie argues with him as they walk through the tunnels , but Evans separates from him . At the briefing , the Colonel discuss the arrival of a mysterious mist in London : anyone who goes inside the mist never comes out again . The mist completely interferes with radio and other communications . The Colonel also explains how the mist led to the fungus and then , two days later , the Yeti . The Doctor and Travers note the new appearance of the Yeti compared to their adventures in Tibet . Anne reports that she and her father believe they could jam transmissions from the Intelligence but need more equipment . Chorley bursts in , clearly agitated that he was not told about this briefing , and argues that an exit to the surface , mentioned by Arnold , could allow a helicopter to airlift them out . The Colonel dismisses him , and his attempts to pull rank as a member of the press are met with scorn . Chorley leaves to question Weams in the Ops Room about tall buildings in this area , including the Post Office Tower . Weams leads him to a map to show him the position of the Tower but sees the further development of the fungus and leaves to tell the Colonel about another advance of the Web . Jamie sees Evans approaching , hides , and surprises him . Evans pretends that he had a moment of conscience , but then admits the gates at Chancery Lane were locked . They make their way back to the fortress . The Colonel decides to give Chorley a liaison job , coordinating things ( and tucked safely out of the way in the common room ) , while the rest get to some real work . The Doctor suggests buying some time by blowing up the tunnel at Goodge Street and sealing themselves in . He plans to set of the explosives on a baggage trolley as it rolls down the tracks , therefore avoiding any Yeti attempts to cocoon it . The Doctor and Travers set to work on a detonator . Meanwhile , someone in the fortress unlocks the main door , leaving the base open and vulnerable . In the lab , Victoria recognises the model Yeti that Anne shows her ( as she saw in Tibet ) , but as the Doctor comes in , Anne realises that one of the models is missing . The Doctor is clearly concerned by this . Someone changes the base on the stolen model Yeti , then places it on the floor . It begins to beep . In response to the signal , a Yeti in a nearby tunnel comes to life and moves off . Travers has constructed the mechanism for the detonator . Victoria points out that Jamie will be trapped outside the fortress if their plan succeeds . The main door slowly opens and a Yeti walks in . The Yeti moves towards the model Yeti and breaks the lock to the explosives store . The Doctor is running through the plan with the Colonel when Arnold comes in and reports the opening of the main door . Another soldier reports finding a broken padlock and a model of a Yeti outside the explosives store . They rush off to investigate . Weams picks up the model Yeti . The Doctor and his army friends listen at the door and hear nothing . They open it to see a bright luminous web rendering their explosives futile . Anne and Travers console Victoria , who is still worried about Jamie . Travers speculates that Jamie may be far safer than any of them are . Arnold reports to the Colonel that the fortress is still Yeti - free . The Colonel decides to take a group of men to Holborn to see if any explosives are still usable ; both the Doctor and the Colonel suspect this is a waste of time but know they must check . The Colonel will leave the Doctor four men . The Doctor announces that someone inside the base must be in league with the Yeti , citing the evidence of this latest precision attack . Victoria foolishly tells Chorley about how she ' s worried the explosion may cut them off from the TARDIS and Jamie . Chorley , not knowing about the tunnel which would trap him in here , finds the temptation of the TARDIS too much . As the Doctor arrives , Chorley leaves surreptitiously . The Doctor soon discovers her gaffe and also discovers they are locked in the common room . Chorley meets Jamie and Evans , safely arrived at the fortress , and they tell him the Colonel ' s party has gone to Holborn . Chorley leaves the base . Jamie and Evans hear the banging from the Common Room . Jamie releases the Doctor and Victoria , and he and the Doctor leave in pursuit of Chorley . As Travers and Anne work in the lab , they hear a scream . Travers goes to investigate and soon finds Weams dead in the Ops Room , a Yeti model lying beside him . As Travers picks it up , a Yeti roars from behind him . . . Episode 4 . Travers tries to run but is attacked . Anne appears , and just as she sees her father on the ground , she too is struck down . The Yeti drag away the Professor . The Doctor , Jamie , Victoria , and Evans are en route to Convent Garden , trying to intercept Chorley , who the Doctor suspects will attempt to use the TARDIS to escape from the Underground . The Colonel and Arnold meet up with Knight , who reports running into the web a mere 100 yards from Holborn . Arnold notes that it was as if the Intelligence knew what they were up to . Knight suggests attempting another route , via Piccadilly , and the Colonel leads the party there . The Doctor and his party run into more of the web before reaching Covent Garden , but he cannot be sure if Chorley made it to the TARDIS before the web arrived . He collects a sample of the web in Evans ' tobacco tin ( casually discarding the tobacco inside , much to Evans ' irritation ) . The web pulsates and releases a shrill noise , but the Doctor manages to get a sample . Arnold and Blake are investigating a tunnel , and just after Blake ' s return to the main party , the Doctor and party find Arnold . Arnold then reports back to the Colonel as the rest return to the fortress to experiment on the web . The Doctor and company discover the main door hanging off its hinges and soon discover web - covered furniture , equipment — and bodies . They discover Anne in the lab and rouse her from unconsciousness . She is soon hysterical as she tells of her father ' s fate , and Jamie and Victoria help her to the common room . The Doctor speculates on why Travers wasn ' t killed — he believes they must have some use for him . Upon their return the Doctor tells the Colonel and Knight about what has happened . Evans is drafted by Arnold to help with the bodies , and on his exit he greets the Colonel , whose memory is refreshed about the lorry driver to Holborn . The Doctor and the Colonel are summoned by Blake to the Ops Room , where more stations are being overtaken by the web as it advances towards Goodge Street . The Colonel muses about the Doctor ' s suggestion of a traitor in their midst . Knight and the Colonel suspect Travers having some sort of involvement , whilst the Doctor suspects Chorley . The Doctor tries to explain what exactly the Great Intelligence is , that he and his friends are time - travellers , and that their police - box - shaped craft is at Covent Garden . Knight responds with derision , but the Colonel accepts the Doctor ' s story . He asks the Doctor if the TARDIS could help them escape . The Doctor said it could but he needs to finish the work that Travers started . Jamie enters to take the Doctor to Anne , who is asking for him . Despite Knight ' s strong doubts , the Colonel decides to try to rescue the Doctor ' s craft . Knight wonders if this is a trap set up by the Doctor . The Doctor explains that the only way to find Travers is to find the central control source . The Doctor wonders why the Yetis chose to attack now , and Anne tells the Doctor that Travers was about to connect a controlling unit to the sphere . The Doctor demands that Anne shows him the sphere . Anne shows the Doctor a contraption she has made that controls the sphere but won ' t override the Intelligence ' s commands . The Doctor says they can fix that . Evans enters , giving the Doctor the model Yeti found by Weams ' body , as per Arnold ' s instructions . The Doctor is horrified to be given it , and Evans denies any wrongdoing , as Anne realises all the other models are gone . Evans indignantly hands over his tobacco tin filled with web , for fear of being accused of wrong doing again . The Colonel ' s plan gets underway : he and his party will attempt to reach Covent Garden station on the ground , while Arnold , Lane , and Evans will attempt to meet them underground via a baggage trolley , using it to carry the TARDIS back to the fortress ; Knight is ordered to remain on duty at the fortress . Meanwhile , the Doctor attempts to observe the web in the tin , but the tin is empty ; the Doctor ' s suspicion of Evans grows . Arnold is also suspicious of Evans and warns him not to try and escape from his party . The Doctor informs Knight of Evans ' potential involvement . The Doctor wants Knight to accompany them to the surface to obtain vital equipment needed to upgrade the controlling unit that is to be attached to the control sphere . He is initially unsure , but a bit of gentle persuasion from Anne sees him yield . Arnold ' s party come up against a web barrier near Covent Garden , and Lane puts himself forward , when Evans refuses to volunteer , to attempt to get through the web on the trolley with Arnold . The two men don respirator masks . Evans pays out a rope attached to the wagon as they go deeper into the web , but the two men scream as they enter , the web pulsating with light . Evans fearfully pulls at the rope , and the trolley emerges , with Lane ' s web - covered body sprawled out on it . Arnold is gone . On street - level , the Colonel and his men arrive at Covent Garden but find Yeti waiting for them . After ducking into a builder ' s yard , the Yeti find another way in , and the men open fire to no effect . However , their hand grenade s prove very effective , felling a great number of the robots . The Yeti also smash down the main gate and force the men across the yard , killing some soldiers as they advance . Three men trapped behind a trader ' s cart are pinned down and killed by web guns . The bazooka is also employed to good use and another soldier is killed before the remaining troops retreat into a warehouse . Knight stands outside a nearby electrical shop , M . Thompson & Son Electricians , listening to the distant gun fire while the Doctor collects supplies . Knight goes in to hurry the Doctor when two Yeti appear in the doorway , felling Knight . The Doctor finds a model Yeti in Knight ' s pocket . One back in the base , the Doctor shows the model to Jamie , who puzzles over who must have planted it . Evans , again , protests his innocence . The Doctor speculates where the other models might be . In the warehouse , Corporal Blake and the colonel have run out of ammo . They climb above some boxes . Blake is grabbed by a Yeti and is killed . The Colonel , the only survivor , runs back to the fortress . The Doctor dismantles the model Yeti as he and Anne start work with their new equipment . Victoria and Jamie are discussing who the traitor might be ( Jamie suspects Chorley ) , when the Colonel staggers in and tells them of the fate of his men . Evans reports the fact that his party were all wiped out too . Suddenly the Doctor shushes the room when he registers a faint bleeping sound . He realises the Colonel has the last model Yeti planted on him by the traitor . Suddenly , two Yeti burst into the room , accompanied by Professor Travers . Episode 5 . The Great Intelligence speaks through the possessed Travers , saying the trap laid for the Doctor was so that it could possess him and his unsurpassed mind . It has created a machine that will drain all past knowledge from the Doctor ' s mind , leaving his body unharmed and his mind wiped clean , but he must submit willingly . If the Doctor gives himself over to the Great Intelligence , all deaths will stop — both in the tunnels and in London . To ensure his submission , Travers takes Victoria hostage and leaves , giving the Doctor twenty minutes to decide . A Yeti remains outside the lab door , so Jamie cannot go after Victoria despite his anger , but the Doctor persuades everyone that the Intelligence cannot harm her or Travers if it is to obtain the Doctor ' s cooperation . Evans asks the Colonel why they don ' t just give the Doctor over to the Intelligence so they can all go home . Travers and the Yeti take Victoria through the tunnels , Victoria subtly dropping her necklace on the track . As the Doctor , the Colonel , Jamie and Anne discuss their options , Jamie and Evans come to loggerheads about the Welshman ' s insistence they hand the Doctor over . The Doctor sides with Evans and says he will hand himself over if he can ' t think of a plan . Evans discovers that a Yeti is no longer guarding them . The Colonel takes Evans and Jamie to search the base , while Anne and the Doctor work again on the control sphere and box . Jamie wants to go up top to overtake the Yeti and ambush them . The Colonel is sceptical but complies when Jamie intends on going himself . Evans is to stay and guard the Doctor and Anne . The Doctor has made a breakthrough regarding the control box and turns his attention to the sphere . The Colonel and Jamie open the door to the surface and find the web pulsating beyond . The Colonel holds it off while Jamie opens a fire exit . The Colonel rushes away , allowing the web to creep in . Meanwhile , the Doctor reactivates a control sphere just as Jamie returns to them , telling them of their situation . The Colonel and Jamie are dubious about the merits of the Doctor and Anne ' s work but are persuaded to leave them alone as they return to work on the control box . Evans confronts the two men , claiming they must be working for the Intelligence : it did say it had another pair of hands working for it . Jamie dismisses his accusation , claiming it must have been Chorley . The Colonel and Jamie try their luck in the tunnel , ignoring Evans ' show of ill discipline At Piccadilly Circus station , the Intelligence speaks through the air , orders Travers to release Victoria , and then releases him from possession . It promises the pair that it will reveal itself to them soon . As Travers recovers his wits , they try to escape from the Yeti on the platform , only to run into another . The Doctor and Anne successfully use the box to control the sphere , but only at short range ; they set to work on reprogramming the sphere itself . The next objective is to set it to work verbally . Anne reminds him he only has twelve minutes left . The Colonel and Jamie make their way through the tunnel . Jamie is now hostile to the Colonel , suspecting him to be affiliated with the Great Intelligence . Jamie discovers Victoria ' s necklace on the tracks in the tunnel and continues after her . At Piccadilly , now guarded by two Yeti , Staff Sgt Arnold appears and , avoiding sight of the Yeti , tells Travers and Victoria he will try to get back to base . Evans is startled by the appearance of a control sphere at his feet , but the Doctor stops him before he tries to shoot it . It is now under the Doctor ' s control . The Doctor and Anne leave for the tunnels , heading towards Warren Street to try to find a Yeti in which to put their control sphere and control . Evans refuses to join them . The Colonel and Jamie meet up with a shaken Arnold . He cannot remember anything after entering the web . Despite Jamie ' s protests , he and the Colonel take him back to the base . At a signal , the Yeti shepherd Travers and Victoria and move them along the platform . In the Ops Room , Evans is hiding behind the electronically illuminated map board of the underground system , having heard something approaching . The Colonel , Jamie , and Arnold enter . Evans is shocked and speechless at seeing Arnold again . When Evans explains where the Doctor and Anne have gone , the Colonel and Jamie go out after them . The Doctor and Anne encounter a wall of fungus , and as they examine it , they discover a Yeti is behind . The Doctor hastily gets out the control box and — at dangerously close range — the Yeti freezes . They quickly replace its control sphere with theirs , and soon the Yeti is obeying the Doctor ' s commands . Evans has dressed Arnold ' s head - wound , but as Evans returns the medical gear to the lab , he yells out in fear to Arnold ; the wall of the laboratory is bulging , and it soon gives way as the mist , the precursor to the web , spills into the room . Episode 6 . Arnold and Evans abandon the base as it is engulfed by the web . Arnold wants to warn the others , but Evans deserts him , fearful of the web . Arnold angrily shouts after him . The Doctor and Anne , in the tunnel with their controlled Yeti , decide not to tell anyone else about their success . The Doctor orders the Yeti to wait for them to leave , then resume acting for the Intelligence until he says otherwise . The Yeti obeys , and they leave . Jamie and the Colonel meet up with the Doctor and Anne , who are surprised to hear that Travers and Victoria are at Piccadilly , and that Arnold ( who is still alive ) told them so . The Doctor and Anne deny that their technology worked and that they must return to HQ as the Doctor ' s twenty minutes are almost up . The Doctor ' s Yeti reactivates after ninety seconds and is soon joined by two more Yeti who move off together into the tunnels . Arnold is soon found by the party , and he tells the Colonel that the H . Q . has been swamped by web . No sooner are they all together than they are surrounded by the three Yetis . In another tunnel , Evans successfully hides from a Yeti , but two more find and capture him , despite his best attempts at trying to talk his way out of it . The Doctor and his colleagues are being led through the tunnels by two Yeti . Arnold asks the Colonel to create a distraction . The Colonel pretends to hurt his ankle and Arnold escapes from the Yeti . Travers and Victoria are led into the Booking Hall at Piccadilly Station , where they discover a large glass pyramid ; inside the pyramid is a smaller upside down pyramid which forms a seat . Travers explains that this is the machine the Intelligence has created to drain the Doctor ' s mind . Victoria spots a figure lurking in the shadows , but it runs off before they can see who it is . As they discuss the Doctor ' s future , the Intelligence speaks to them through a speaker on the wall , insisting on their cooperation and non - interference . Travers wrings his hands at having brought this onto the world thanks to his curiosity . As the main party is guarded on the Piccadilly platform , the Doctor explains to Jamie about the controlled Yeti . He gives Jamie a microphone to use to call the controlled Yeti to him — hopefully it will be the right one . A frightened Harold Chorley finds Arnold and tells him his stories of the surface , the Yeti , fear , and the strange machine at Piccadilly station , including the Yeti and their two prisoners , for it was he that Victoria saw lurking in the shadows . A suspicious Arnold wonders how he could possibly have survived all this time and tells Chorley to come with him . Anne suggests the Doctor use his control box in order to escape , but the Doctor tells Anne there ' s no point in trying to escape now as he must meet the Intelligence face to face . The Colonel says that the Yetis have not noticed Jamie ' s disappearance and asks the Doctor if he ' s going to give himself up , for the good of everyone , including his friends . Before he answers , Evans is brought in . The Colonel tries to reprimand Evans for abandonment , but Evans says he was trying to save Travers and Victoria . Two Yeti start to move the Doctor away towards the Booking Hall , and he insists that his friends don ' t struggle or resist . As they leave , Jamie pops his head out from a large metal bin . In a passageway a Yeti approaches the Doctor carrying some kind of headset , and as it begins to lower it onto his head , he switches on his control box and the two Yeti become motionless . He takes the headset from the Yeti , makes some rapid adjustments to the circuits , and replaces it in the Yeti ' s grasp . They place the device on the Doctor ' s head . Anne is reunited with her father and the inner sanctum of the Great Intelligence . A worried Victoria asks about the Doctor and Jamie . Back on the platform , Jamie is speaking into the microphone , attempting to bring the controlled Yeti to him . A Yeti appears , but though Jamie is unable to make it follow further commands , it does not harm him , but moves off back into the tunnels . As Jamie turns to leave , a Yeti is behind him . Most of the group are now gathered in the Booking Hall , as the Doctor is ushered in , wearing the headset . As the Doctor again warns his friends away from interference , the Intelligence is heard thanking him for his cooperation . The Colonel yells out at the Intelligence to show itself , but it says that will happen soon enough . Chorley emerges , and the entire assembly gasps , thinking him to be the Great Intelligence . He desperately protests his innocence , exclaiming the identity of the real " traitor , " Staff Sergeant Arnold . The possessed Arnold appears now wearing a metallic headset , stating that it , the Great Intelligence , has manifested itself in his lifeless body . The Great Intelligence informs the Doctor ' s friends that it has no intention of letting them leave unscathed . Jamie is brought in by a Yeti , and all the survivors are present . Arnold orders Jamie to stand by the Doctor when , suddenly , a Yeti grabs Jamie by the throat . The Doctor protests and refuses further cooperation until Jamie is released , and Arnold orders the Yeti to release him with the threat that if the Doctor doesn ' t comply Jamie will be killed . The Doctor is instructed to submit to the Intelligence , and he does so willingly and sits in the pyramid . The Great Intelligence connects a lead inside the pyramid to the Doctor ' s headset . As the Great Intelligence announces the beginning of the transfer , Jamie yells out for the controlled Yeti to attack . First it attacks its comrades — in the ensuing confusion the other Yeti attack each other and the Colonel , who is knocked to the floor . The controlled Yeti then proceeds to throttle Arnold at the order of Jamie . As the transfer continues , the Doctor vociferously resists Jamie ' s attempts to rescue him . Anne and Prof . Travers assist Jamie as he pulls the Doctor , who is yelling and pleading to leave him in the pyramid , and soon the Doctor is free . Jamie pulls the wiring out of the pyramid , which explodes . The Yeti are disabled , and Arnold is killed . As the smoke clears and congratulations are exchanged , the Doctor is furious and despondent at Jamie and the others . He had altered the circuits so that instead of the Intelligence draining his mind , he would have drained the Intelligence . Instead of them putting an end to its evil , it has simply been cut off from contact in space . They find Arnold ' s blackened husk of a body . Despite this , the Colonel and Anne are calling the Doctor a hero , and Chorley wants to make him a household name on his television program . That ' s all he needs to hear : he gathers Jamie and Victoria and , after hasty goodbyes , heads to Covent Garden and the TARDIS . The Doctor and his friends are lost in the tunnel — Jamie says there is no real rush but the Doctor says they need to be safe before the train s restart . Home video and audio releases . DVD release . Released : VHS releases . Episode one , the only episode of the story then known to exist at the time , was released alongside " The Faceless Ones " episodes one and three and the remaining episodes of " The Reign of Terror " as part of a two - cassette release entitled " Doctor Who : The Reign of Terror " . This release marked the final time any of the show ' s material was made available on the VHS format . Released : Notes : The US release was also located in " The End of the Universe Collection " .