Hey, my holiday snaps are back! Let's see... sand, beach, sunset,sand, palm trees, sand, more palm trees,sandy palm trees...
Hold on, what's the funny blur on that photo? A double exposure? A moth? A smudge? Or could it be something more? Could it be a ghost lurking just outside normal human perception, or an ominous warning of disaster to come?
Spooky photographs come in three main types: