When the team gets caught in the middle of a deadly divorce, Ryan's life is put in jeopardy after examining the crime scene. 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 fiancée; however, when Detective Ryan Wolfe 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.