Did middleweight boxing champ Laroi Steele die accidentally from the beating administered in the ring by his hated rival Javier Molina (Greg Serano)? Or was this accident actually premeditated murder? Grissom (William L. Petersen) leans decidedly toward the latter option. Meanwhile, Catherine (Marg Helgenberger) investigates the shooting of an L.A. gang member, while Nick (George Eads) looks into a violent jewelry-store heist. ~ Hal Erickson, Rovi