Love Lost

S7 E19: Erin faces off in court against her ex-husband, Jack (Peter Hermann), who is representing the person she is attempting to convict of murder. Also, Danny and Baez investigate to see if the husband is behind the murder of his own wife; Frank is confronted by a mother who accuses the NYPD of being negligent in solving her son's murder; and Jamie rides with a new partner, Officer Brenda Patimkin (Sarah Mezzanotte).