Hertford, home of the Holy Grail An ancient secret society; a demand for a papal apology; and a network of hidden tunnels. Strange things have been stirring in Hertfordshire recently. Oliver Burkeman goes in search of the Knights Templar and, perhaps, the cup of Christ Tuesday January 4, 2005 The Guardian (UK) One of the problems with secret societies - especially the kind whose members exert a shadowy influence on the course of world events - is that they can be a bit difficult to track down. Never was this more true than of the Knights Templar, the ancient Catholic...