It is frequently claimed that there is a great and profound secret hidden in Rosslyn Chapel, a secret that has so far remained tantalisingly elusive. But if there is a secret, what kind of secret is it? Is it the contents of the Templar preceptories, hastily removed from France immediately prior to the order’s arrest and imprisonment in October 1309? Or is it the lost gospels of Christ appropriated from beneath Solomon’s Temple by the Knights Templar during their lengthy sojourn in the Holy Lands?

Another school of thought argues that the Holy Grail itself lies hidden beneath the floor of this mediæval / Renaissance chapel.