Spooks you, sir: ghosts caught on camera

Ever since the dawn of photography, ghosts have been popping up in pictures. The Victorians were besotted by the idea that capturing a moment in time could also fix forever the spectres they thought surrounded them. From artistic representations of angels and ephemeral figures, it was a short step to faking images, with figures clad in sheets or strands of suspiciously material ectoplasm issuing from mouths to fool the credulous.