Woulda, Coulda, Shoulda

Greg, Riley, and Brass investigate the death of a woman and the beating of her daughter who falls into a coma. They discover the women's husband is a suspect in the murder of a private investigator, Trevor Murphy and Trevor's kids may be bent on getting revenge for their dad's murder at any cost. Catherine and Nick investigate when two teenagers crash their car into a tree and die and uncover a deadly game of mailbox baseball. In the meantime, Grissom attends the trial of Natalie Davis.