Two girls photographed real fairies at Cottingley

Why a careful man believed

It is easy, in hindsight, to treat Conan Doyle's belief as simple gullibility. That is too quick. Doyle did not simply publish the two 1917 photographs as they arrived — he tried, within the limits of 1920 technology, to test them. He sent the original negatives to Kodak for expert examination. Kodak's technicians reported that they could find no evidence of double exposure, retouching, or the other darkroom techniques a faked single image of that era would typically show. That is a genuine, and genuinely inconclusive, finding — not an invention by credulous investigators.

Doyle and Gardner also did something a pure hoax should not have survived: they sent the girls new equipment and asked for more. In August 1920, Gardner travelled to Cottingley with two folding-plate cameras and glass photographic plates that Gardner himself had secretly marked, specifically to guard against substitution or tampering. Elsie and Frances, using this monitored equipment, still produced three further images over the following days — a third photograph of Frances with a leaping fairy, a fourth of a fairy offering Elsie a flower, and a fifth showing fairies in what Doyle described as a “sun-bath.” That the girls could still produce fairy images under closer supervision, using plates they had not supplied themselves, was for Doyle a meaningful hurdle cleared, not a formality.

It also mattered enormously who was making the claim. These were not professional mediums or paid performers; they were two working-class Yorkshire girls with, on the face of it, nothing to gain and a great deal of unwanted attention to lose. And the public understanding of photographic fakery in 1917–20 was genuinely limited — double exposure and simple composite printing were known to specialists, but the idea that a single, seemingly unmanipulated print could be staged with props and forced perspective was not widely appreciated outside professional photographic circles, which is precisely why Kodak's technicians hedged rather than called it a fake outright. Doyle was wrong, but he was wrong in the company of genuine experts who also could not immediately explain what they were looking at.

Finally, there is the sheer duration of the girls' story. Both women faced direct questioning across six decades — by journalists, researchers, and eventually television crews — and neither broke for most of that time. In a 1976 interview for Yorkshire Television, both Elsie and Frances, by then elderly women with nothing obvious to protect, still declined to say outright that the photographs were staged. To believers, that kind of persistence looked less like an unbroken lie and more like an unwavering memory.

Paper, pencil, and hatpins

The case against the photographs was, in fact, available from very early on — it simply lacked the specific piece of evidence that would make it undeniable. Sceptics in 1920 immediately noted that the fairies in the first two photographs looked less like unknown organisms and more like illustrations: stylised, flat, fashionably dressed in the latest 1917 hairstyles, and posed in the same static, theatrical attitudes you would expect from a book plate rather than a living creature caught mid-motion. Ilford, the rival photographic firm Doyle and Gardner also consulted, reported signs of faking where Kodak had hedged.

The evidence became conclusive in the early 1980s, when Geoffrey Crawley, editor of the British Journal of Photography, conducted the first rigorous technical investigation of the case, publishing his findings as a multi-part series titled “That Astonishing Affair of the Cottingley Fairies.” Studying the optical properties of the cameras the girls had used, Crawley showed that the fairy figures were consistently too sharp, too flat, and too close to the camera to be free-standing three-dimensional creatures at the claimed distance — they behaved, optically, exactly like small paper models held a short distance from the lens.

Crawley's investigation prompted Elsie Wright to finally write to him directly, and in 1983 both she and Frances confirmed the hoax on the record — Elsie in a detailed letter to Crawley and both women in an interview for the magazine The Unexplained. Their account matched the physical evidence closely: Elsie had traced figures from illustrations by Claude A. Shepperson that appeared in Princess Mary's Gift Book, a 1914 charity anthology Frances had brought with her from South Africa. Elsie redrew the figures with pencil, added wings, updated a hairstyle or two, cut the results out of paper, and — with her cousin's help — pinned the cutouts upright in the grass and undergrowth with ordinary hatpins long enough to take each photograph, afterward disposing of the paper props in the beck.

Even the one long-running puzzle in the case — that both women, decades later, separately claimed to have personally taken the fifth photograph — turned out to have a mundane photographic explanation. Crawley, in a 1983 letter to The Times, proposed that the fifth image was an unintended double exposure, meaning both cousins could sincerely, if mistakenly, remember pressing the shutter. Between the confessions, the traced source illustrations, and Crawley's optical analysis, no element of the physical evidence still requires an extraordinary explanation.

What the fairies were really evidence of

The Cottingley case endures not because the physical evidence is ambiguous — by 1983 it plainly was not — but because it captures something true about grief, authority, and the hunger for wonder. Conan Doyle came to the fairy photographs only a few years after losing his son Kingsley, his brother, and other close relatives to the First World War and the influenza pandemic that followed it. He had already thrown himself into spiritualism, seeking any credible sign of a world beyond the visible one. Two photographs of fairies were not, to him, a curiosity; they were a possible crack in the wall between the living and a gentler unseen order, arriving at the exact moment he needed one most.

Doyle's fame did the rest of the work. A claim this strange, made by two anonymous Yorkshire girls, would likely have stayed a local rumor. Made — and defended in print, twice, in one of the most widely read magazines in the English-speaking world — by the creator of the most famous rationalist detective in fiction, it became something the public felt obligated to take seriously, if only to see how a man so associated with deductive logic could be persuaded.

The girls themselves, meanwhile, were caught in a trap of their own making that grew larger than they ever intended. What began as an attempt to justify wet stockings to an aunt became, within three years, a nationally reported phenomenon endorsed by a knighted celebrity author. Elsie later explained the sixty-year silence in exactly those terms: “Two village kids and a brilliant man like Conan Doyle — well, we could only keep quiet.” Frances, for her part, insisted she had never thought of it as fraud at all: “It was just Elsie and I having a bit of fun, and I can't understand to this day why they were taken in — they wanted to be taken in.” That last line is arguably the most important sentence either woman ever gave an interviewer: an eyewitness account, from inside the hoax, of just how much of the believing was done by the audience itself.