The Posadas High School girls' volleyball team is on a hot winning streak, exciting everyone. But then the coach, Clint Scott, is found gunned down in the girls' shower room, the victim of four bullets, one fired nearly point blank into his heart. Dead for hours, he was killed soon after the end of last night's game. And, last night, a homegrown Banksy tagged several sites in town before he apparently began work on a section of wall outside the girls' locker room at the high school--a project that was clearly, and dramatically, interrupted.