Fact1: fiancee are married in Alpine church, Fact2: Roy returns to trenches, Fact3: Castle and Roy run photographic studio in London, Fact4: Beatrice asks him to meet her at great tree in Birkenwell Woods, Fact5: time is successful in pulling back up to path
Output: In Switzerland in 1912, photographer Charles Castle Toby Stephens and AnnaMarie, his fiancee, are married in an Alpine church. The following day, they are walking in the mountains when a snowstorm closes in. They are returning to the village when a crevasse opens and AnnaMarie falls into it. Charles tries to pull her out but he loses his grip and she dies. During the Great War, Castle serves as an army photographer in the trenches of France. He is photographing corpses with his assistant Roy Phil Davis when a mortar lands close by. Roy returns to the trenches but Castle seems unconcerned and continues photographing. He returns to the trenches just before the mortar explodes. After the war, Castle and Roy run a photographic studio in London. Castle specialises in photographic trick work, including photomontage. He attends a lecture at the Theosophical Society, where Arthur Conan Doyle is examining a projected image of the Cottingley Fairies. Conan Doyle seems convinced they are genuine, but Castle stands, publicly debunks the image and hands out business cards to the audience. At his studio, Castle is visited by Beatrice Templeton Frances Barber, who shows him a photograph of her daughter. She is convinced that a mysterious shape is a fairy, but Castle dismissed the idea. However, he investigates the photograph, sees the shape laterally reflected in the girls eye and makes multiple large prints to discover how the picture was made. Unable to explain or debunk the photograph, Castle hastily travels to see Beatrice in a village called Birkenwell, where upon arrival he sees and recognises Templetons daughters, Ana Miriam Grant and Clara Hannah Bould, and follows them to their home. Beatrice tells Castle that the photograph no longer matters – she has seen the fairies. She asks him to meet her at the great tree in Birkenwell Woods the following day. At the appointed time, Castle walks to the great tree, where Beatrice is waiting. Before he arrives, she removes her hat and shoes then climbs the tree. When he arrives, Castle discovers Beatrices removed clothing, then finds her lifeless body on the ground. After making a statement at the local police station, Castle encounters the Templeton girls, who are greeted by their father Nicholas, a Christian minister. Nicholas reluctantly allows Castle to remain since the girls seem to like him and he is concerned about their behavior. Castle discovers that Beatrice had been documenting her daughters odd behavior, and in her notes finds that she had been experimenting with a distinctive rare flower. Having already noticed Ana and Clara consuming the flower themselves, Castle takes some himself and discovered that it allows him to see the fairies that Beatrice and her daughters saw. Castle calls in his business partner and assistant to set up a photo shoot using his most advanced equipment. After consuming the flower again and having them photograph the experience, Castle concludes that fairies do exist, and that the flower allows the brain to slow down enough so that they can be seen and interacted with, as they normally move so fast that only the most advanced of cameras can photograph them. Castles obsession comes to a head when one day, a fedup Nicholas starts burning his equipment; although Castle is too deep under the flowers influence to initially care, he flies into a rage when some of the fairies drift too close and catch fire. Castle assaults and kills Nicholas and is subsequently arrested. Refusing to defend himself, Castle is found guilty and sentenced to hang, while Ana and Clara are put into foster care, though they seem to care little about the situation. Castle bids farewell to his associates and faces his death without fear. The final scene returns to the Alps, where Castle is trying to save AnnaMarie. This time he is successful in pulling her back up to the path, and they embrace and continue walking.