Sean Martin is a writer, poet and filmmaker. He has written books on The Knights Templar, Alchemy and Alchemists, The Gnostics, The Cathars, Andrei Tarkovsky and New Waves in Cinema.Sean Martin is a writer, poet and filmmaker. He has written books on The Knights Templar, Alchemy and Alchemists, The Gnostics, The Cathars, Andrei Tarkovsky and New Waves in Cinema.