Blood and Ice ( comic story ) It explored the possibility of many more alternate Clara Oswalds existing than those originally portrayed in the television series . This subsequently led Clara to meet Winnie Clarence , one of her " splinters " . As a result of meeting the " prime " version of Clara , Winnie becomes the first splinter to become aware of her purpose . She ' s also the first splinter of Clara to not die saving the Doctor , as Winnie survives and leads her own life . Summary . Part one . The Doctor and Clara are on a tour of Snowcap University , which Clara finds uninteresting . They are at a point in which Dr Audley is supposed to speak ; however , she has met a delay , so to Clara ' s relief the tour moves outside . As Winnie and a fellow student watch the tourists , Dr Audley is apparently now ready , and the tour moves back inside . Audley announces that this tour may be the location ' s final one : the Antarctic Treaty , which forbids military activity , mineral mining and the dumping of nuclear waste , is coming up for renewal . Audley also mentions that this spot is the only one which humanity cannot legally exploit or destroy for its own gain , placing the year at 2048 according to the Doctor . Snowcap University has dedicated its time to clean up pollution on Antarctica , and if the treaty is abandoned , these efforts will become useless . Consequentially , some students and staff members have chosen to stay on campus even after the end of the term , in order to conclude certain experiments which otherwise may never be finished . George Evans , another tourist , asks to speak to Dr Audley ; she refuses , but Evans will not take " no " for an answer . . . As the tourists ride a helicopter after the tour ' s conclusion , Evans discusses with the tour guide his dissatisfaction with the experience . Rather than wishing for sightseeing , Evans desired answers which he did not receive . His daughter Polly did not come home at the end of the term ; Audley initially claimed she did indeed leave , before explaining that she was involved in a top - secret research project . Mr Evans eventually convinced Audley to let him see his daughter , though he could not enter the experimentation room ; Polly claimed to be fine , but her father noticed something wrong in her eyes . . . George Evans responded by threatening Dr Audley , which the Doctor doubts was a particularly wise move . Suddenly , Clara spots something : a man wearing shorts and a t - shirt , despite the temperature of negative fifty degrees . Closer inspection reveals the man to be frozen solid - and yet , he manages to let out a faint sound . The Doctor recognises this as impossible . As Clara attempts to comfort him with promises of a medical centre , the man lets out quiet calls of help . Steeping up onto the helicopter , the man scratches his arm on a piece of metal sticking out from the door , bizarrely bleeding blue blood . Due to this extra weight , as well as the Doctor ' s curiosity about this man , the Doctor and Clara do not reenter the helicopter - fortunately for them , as suddenly , a flock of wandering albatross es attacks the vehicle , causing it to crash . As Winnie , Navin and Roger arrive to help , the Doctor regrettably announces that all of the helicopter ' s inhabitants , among them Quinn ( the boy with blue blood ) , are deceased . The students recognise this name : Quinn Norton was a student who moved to Project Sub - Zero , the same project which Polly Evans was involved in . The Doctor decides to visit Dr Audley ' s office , while Winnie takes Clara to her room to get clean clothes . Clara and Winnie remove their snow hoods and goggles , and draw back in for a shock : their faces are identical . Part two . The Doctor mentions the helicopter crash to Dr Audley , who he believes to be responsible . Claiming to be an inspector , the Doctor asks to see what he wasn ' t shown on the tour . Clara , meanwhile , learns that Winnie is a nickname for Oswin ( a password devised by Clara , used in several of her echos ' names ) , confirming her to be one of Clara ' s echoes . The species examined in the laboratory - nematode s , springtail s , and ice fish among them - share a fundamental thing in common : they all are capable of living in freezing temperatures . Audley explains that Project Sub - Zero is focused on surviving in the extreme cold . The Doctor is still suspicious , and he ' s convinced that this isn ' t his first visit to Snowcap University . After learning that the building was once a rocket base , he realises that he is in Snowcap Base - the place where he experienced his first regeneration . Recognising this , the Doctor decides to find Clara . Clara explains that Winnie ' s roommate Marianne is taking part in Project Sub - Zero , allowing Clara to stay in her room . However , the Doctor , having just investigated the research project , knows it does not contain any living quarters . . . As Winnie attempts to phone Marianne , the Doctor and Clara discuss Clara ' s echo . They contemplate whether Winnie should know of her purpose to die and save the Doctor . Winnie happens to overhear this conversation just as Clara mentions making a decision that fates her to death . Hearing this , Clara ' s echo angrily escapes on a snowmobile , and a horrified Clara chases after her . Unfortunately for the two , the ice below them cracks , sending both Winnie and Clara into an abyss . . . Part three . The Doctor visits Mr South , the head of security , and points out some observations . Instead of watching the Doctor himself , a mysterious stranger , South was focused on his own boss , Dr Audley . South admits he is unaware of Audley having any unwholesome ideas ; he is merely suspicious . However , in fear of others asking questions about him , South keeps his worries quiet . Winnie and Clara have safely landed in a cavern . Winnie , naturally , is still angry at Clara , despite not knowing the full story of her actions . Back in the University , South explains his life : he works undercover as a member of Ophion Oil , which wants to convert Snowcap into headquarters for their proposed drilling project . South is not brave enough to end his alliance with Ophion , despite no longer agreeing with it . And while he no longer approves of the company ' s intentions , South is convinced it will eventually find a way of carrying them out . South also mentions the continent ' s suspected ice caverns ; The Doctor suspects these could contain a secret underground lair , and decides to investigate them . Clara is bleeding , and her blood appears to be blue ; however , closer inspection reveals that the lighting was playing tricks , and that the blood is actually a normal red . Clara mentions Quinn ' s blue blood ; Winnie explains that only certain octopus es normally have blood that colour , which helps them survive in the cold . As the two look for an exit , Clara tells Winnie of the full story of her creation . Despite the story ' s apparent absurdity , Winnie does believe it ; she can recall faint memories of the event . However , she is still frustrated , since Clara did not consider the consequences which her echoes would face . This conversation is cut short when Winnie and Clara hear what seems to be animals . They follow the noises to a laboratory housing unusual creatures - converted forms of the University ' s missing students . A now monstrous - looking Marianne explains to Winnie that Audley was behind their new forms . . . The Doctor and South happen to arrive at the base at exactly this point , and the Time Lord confronts Audley . The scientist explains her intentions : she wants humans to be able to truly live and survive on Antarctica , and is supposedly " saving " the place for humanity . She believes that allowing these humans to survive on the continent would help the Treaty be renewed . After learning that oil companies are already on the continent in the form of Mr South , Audley is forced to advance her plans at a faster speed . She orders her scientists to bring the entire University to the base , a task soon completed ; the only person missing is Oswin Clarence . Clara responds by stepping out , pretending to be her echo . As Audley leaves , the real Winnie steps out while the Doctor finds a key . Marianne and Winnie have their first conversation in quite some time ; despite Marianne ' s now bizarre appearance , the two are happy to see each other again . However , Marianne is still trapped in a cell . The Doctor ' s key does not fit , and the sonic screwdriver cannot achieve the task either . To make matters worse , Audley reenters at this point , putting everyone in a cell and giving both Clara and Winnie the choice to experiment or be experimented on . Clara refuses to cooperate , but since letting the Doctor die has a chance of saving herself , Winnie is quite willing . She ' s happy to work with Dr Audley . . . Part four . Marianne insists that Winne would never betray them , but the Doctor waits to believe her until he sees proof . Meanwhile , Audley is showing Winnie around the base . After being shown a vat of " liquid ice " which freezes the body instantly , Winnie is introduced to an octopus that switches from calm to attacking when reaching a certain sound frequency . Winnie asks for a demonstration ; using his sonic screwdriver , the Doctor finds the frequency , deciding that Winnie intended for this to happen and that she is indeed on their side . Winnie also questions whether the animals are ever a distraction ; the Doctor sounds the screwdriver to upset the animals in response , allowing Winnie to throw him the cell ' s key in the chaos . After the Doctor opens the cell , Audley threatens to kill Winnie for her betrayal . However , using the information he picked up earlier , the Doctor uses his screwdriver the alter the frequency of sound in the room , shattering the animals ' crates and causing them to attack . Unfortunately , however , the animals attempt rather violent attacks , and the sonic screwdriver will not stop them . Audley still attempts to kill Winnie in the process , and as Winnie fights back , they both fall into the liquid ice pit . The Doctor orders everyone around to run , suggesting Marianne swim instead . However , with her bruised leg Clara cannot run , so the Doctor and Clara set to find transport at the University . The Doctor fixes a broken snowmobile with his sonic screwdriver , allowing himself and Clara to make an escape . Following a firework set off by the group , they end up in the same location as the rest of the base ' s inhabitants , as well as many of their relatives . Winnie ' s mum is among the people there . Clara suggests pretending to be Winnie , but the Doctor disapproves , forcing her to consider what it would have been like if someone had taken the place of her own mother . Suddenly , Marianne emerges from a thin sheet of ice , holding the real Winnie ' s body . The Doctor notices a syringe protruding from her leg - surrounded by blue blood . He realises she has " antifreeze " in her " radiator " , and uses his sonic screwdriver to give her a " jump - start " . Regaining consciousness , Winnie explains that she was holding the syringe while falling , and the Doctor concludes that it gave her blue blood and the ability to survive in the freezing water . Clara realises that Winnie ' s survival means not all of her echoes die in the process of helping the Doctor , and the Doctor admits to having " defeated a few demons " as well . Helicopters arrive in shifts later , bring everyone off the continent . Marianne describes her plans to reverse the processes of Audley ' s experiments ; even if these ideas fail , Marianne would be more than happy to live in Antarctica . As the group watches the aurora australis , the Doctor , Clara and Winnie ponder over whether the Antarctic Treaty will be renewed . None of them are sure , but they conclude that they can at least try to save Antarctica . Plot . " to be added " External links . " to be added "