The Most Puissant Order of the Silver Helix is an organisation in the Wild Cards series of of books. It is a knighthood with a membership comprising almost exclusively of wild carders, predominantly aces, with a number of deuces and jokers besides. The knighthood ranks after the Order of the Bath and before the Order of the Star of India. The Order of the Silver Helix is rare in that it has a more than ceremonial nature, its members serving the British Crown to provide most of the security for Buckingham Palace and aiding Scotland Yard, the British Army, and Her Majesty's Secret Service.