Jo Clayton (1939-1998) was the author of thirty-five published novels and numerous short stories in the fantasy and science fiction genres. She was best known for the Diadem Saga, in which an alien artifact becomes part of a person's mind. She also wrote the Skeen Trilogy, the Duel of Sorcery series, and many more. Jo Clayton's writing is marked by complex, beautifully realized societies set in exotic worlds and stories inhabited by compelling heroines. Her illness and death from multiple myeloma galvanized her local Oregon fan community and science fiction writers and readers nationwide to found the Clayton Memorial Medical Fund.