Over the weekend the local Geocaching community went on a Ghost Walk through Central led by Rose Trehaeven. The walk was organised by fellow cacher Graham Chrich (better known in caching circles as Plainoldgraham) and he kept those of us who couldn't make it updated via our WhatsApp group with pictures to show us what we were missing. He took this picture in front of the Grey Institute and as soon as he had posted it one of the other guys commented about the figure in the background. It seems that only those of us not on the tour spotted it as those there didn't see anything out of place. Can you? Have a closer look.
Mmmm,.. yes ok. Probably nothing... *looks over shoulder*
What do you think?