The tyrant of Horacio Castellanos Moya's ambitious new novel is the actual pro-Nazi mystic Maximiliano Herna ndez Marti nez -- known as the Warlock -- who came to power in El Salvador in 1932. An attempted coup in April, 1944, failed, but a general strike in May finally forced him out of office. Tyrant Memory takes place during the month between the coup and the strike. Its protagonist, Hayde e Aragon, is a well-off woman, whose husband is a political...