Sean Martin is the author of several other Pocket Essentials titles, including Alchemy and Alchemists, Andrei Tarkovsky, The Cathars, The Gnostics, and The Knights Templar.

Sean Martin is the author of several other Pocket Essentials titles, including Alchemy and Alchemists, Andrei Tarkovsky, The Cathars, The Gnostics, and The Knights Templar. Less