Book Reviews : China's Secret Services: Richard DEACON, The Chinese Secret Service (revised and updated edition). London and Glasgow: Grafton Books 1989. 443 pp. ISBN 0-586-20384-2. Price:  6.99. Roger FALIGOT and Remi KAUFFER, The Chinese Secret Service. Translated from the French by Christine Donougher. London: Headline Book Publishing PLC 1990. xix + 524 pp. ISBN 0-7472-3368-3. Price:  5.99 (paperback). John BYRON and Robert PACK, The Claws of the Dragon: Kang Sheng - The Evil Genius Behind Mao and His Legacy of Terror in People's China. New York and London: Simon & Schuster 1992. 560 pp. ISBN 0-671-69537-1. Price: $27.50 (hardcover)