then the killer started to raise the gun in his good hand but the gpm was still moving toward him like an eagle swooping in on a field mouse , had that little pistol raised and it boomed again , the recoil jerking his hand high in the air , the second bullet detonating another explosion of red , this time in the killers other shoulder , knocking him back against one of the chrome hang-on poles in the center of the aisle where he sagged , both arms limp and useless at his sides , and gaped at the relentless man moving ever closer .