Nailed

S4 E8: A woman who was just about to sign her divorce papers is found shot to death with a nail gun in her soon-to-be ex-husband's new home. Suspicion falls on her ex-husband and his new fianc�e; however, when Ryan begins to follow the evidence, he is shot in the eye with a nail gun. Now, as one of their own lies wounded, the team must find out who killed the woman and who may have ended Wolfe's career as a CSI.