The Book of Three (1964) is a high fantasy novel by American writer Lloyd Alexander, the first of five volumes in The Chronicles of Prydain. The series follows the adventures of Taran the Assistant Pig-Keeper, a youth raised by Dallben the enchanter, as he nears manhood while helping to resist the forces of Arawn Death-Lord. The book provided many elements of plot for the 1985 Disney animated feature The Black Cauldron. Source: Wikipedia (en)