Each Armistice Day from 1922 to 1924, the Spirit Photographer Ada Deane positioned herself above the crowd at the Whitehall Cenotaph and exposed her photographic plate for the two minutes of the Silence. When the pictures were developed, this crowd of disembodied faces had been recorded. These were assumed  to be the faces of fallen soldiers returning from the Other Side, and attending the Remembrance service.

In 1924,  however, the Daily Sketch  revealed that the heads mysteriously shown in that year’s photograph were in fact pictures of footballers, cut from the Daily Sketch. Arthur Conan Doyle still reckoned they were genuine – but he kept on believing in those famous fairy photos, too.