The Great War ( audio story ) Publisher ' s summary . Voluntary Aid Detachment nursing assistant Molly O ' Sullivan spends her days facing the horrors of the Great War . Little does she know that a man from another world has arrived , looking for her . But what are the strange sounds coming from the battlefield at night ? Where is the glowing gas coming from ? And is everyone who they claim to be ? Plot . Distraught after the death of Lucie Miller , who perished defeating the Dalek s , the Doctor tries to push the TARDIS forward in time to the end of the Universe . He is stopped by the Time Lords and intercepted by their agent , Straxus ; such travel is forbidden . The Doctor explains he was looking for hope , his own having run out , and Straxus offers him a mission ( previously cleared personally with the Time Lord President ) that might give him some . The Doctor lands in No Man ' s Land in France during World War I , using his sonic screwdriver to search for something , but is caught in a mustard gas attack . He is picked up by English soldiers and taken with other wounded men to be transported back to a hospital . The Matron in charge confiscates his screwdriver , believing it to be a penny whistle , and he is placed into the care of two Voluntary Aid Detachment ( VAD ) workers : Irish servant Molly O ' Sullivan and English lady Isabel Stanford . Isabel takes a shine to the Doctor , but Molly thinks he is a charlatan , all charm and no substance - not least because he recovers uncommonly quickly from his exposure to mustard gas . As the nurses , VADs and wounded leave on a train , soldiers and others report hearing unusual noises that sound like " scraping metal " , the source of which they have been unable to see . The train is forced to stop at a break in the tracks , seemingly caused by a shell crater , and one of the soldiers reports a cloud of odd , glowing gas approaching . The Doctor convinces the Matron to return his " penny whistle " and manages to mend the track just in time for the train to continue its journey , but he is almost left behind and is enveloped by the gas before he is rescued . He collapses , complaining of feeling cold , and muttering about " time winds " ; he also calls out Lucie ' s name . Back at the chateau hospital , the Doctor recovers slowly . Molly and Isabel fight about him , and about Kitty Donaldson , the lady whom Molly served and followed to France . She is dying of gas gangrene in one of the tents reserved for hopeless cases , and Molly hasn ' t been able to bring herself to visit her since their return . They take the Doctor , still affected by what they think is gas , to Kitty ' s tent , thinking he is beyond help . Kitty is pleased to see Molly , but reports that she has also heard the metal scraping noises , here in the camp , and seen strange things . Dr Sturgis , one of the American doctors assisting at the hospital , visits the tent and decides the Doctor is an excellent candidate for their experimental blood transfusion treatment . He begins to recover , but just as the mysterious glowing gas again appears , enveloping the tent and killing Kitty . The Doctor identifies the " gas " as time wind s , leaking into World War I from the time vortex ; dangerous for a Time Lord , but deadly to many other life forms . Sturgis and Molly dismiss his ideas as delusional , and against his protestations , he is taken by Sturgis to the chateau with Isabel ' s help . Inside , Sturgis restrains the Doctor , who appeals to Isabel to free him as the treatment will be fatal for a Time Lord . When she moves to help , Sturgis kills her . Molly arrives and Sturgis claims the Doctor killed Isabel , forcing him to restrain his patient , but Molly is suspicious and eventually believes the Doctor ' s innocence and unties him . Sturgis does not attack them - but his masters , the Daleks , arrive . The Doctor , having discovered that Molly is the person he was tracking with his sonic screwdriver , persuades her to flee with him as the Daleks attack , destroying the chateau . Meanwhile , in another time and place , a mysterious individual known as Kotris discussed his plans with the Daleks .