As autumn draws itself around us, in extended twilight hours the world of shadows is silently unfolding beneath our feet. Distorted in shape and robbed of colour and depth, familiar objects take on new, eerie identities. For Plato shadows may have been a prison, but for the photographer they are as captivating a subject as the scenes that cast them - photography is after all and art-form crafted from the interplay between light and dark. From haunting silhouettes to shapes unrecognisable in their abstraction, shadows are a source of unfaltering beauty. Here is a selection of photos from the Picfair catalogue to tempt you back into the cave of shadows.