You can't say the mob wasn't warned about John Shaft. "He's a bad dude," a numbers racketeer cautions them. Now, Shaft himself will deliver that message in a way New York City's wiseguys understand. Richard Roundtree reunites with the director (Gordon Parks) and screenwriter (Ernest Tidyman) of 1971's trendsetting Shaft for Shaft's Big Score!, the second of Roundtree's three movie portrayals of the street-smart, leather-jacketed private
