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Gail Morgan Hickman (born December 14, 1953) is an American producer and writer of film and television. His first major writing credit was for the Dirty Harry film The Enforcer (1976). His subsequent screenplay credits include The London Connection (1979), The Kids Who Knew Too Much (1980), The Big Score (1983), Murphy's Law (1986), Number One with a Bullet (1987), and Death Wish 4: The Crackdown (1987). Wikipedia