S13, EP16 "The Naked Truth"
Jamie learns that Eddie's close friend Tracey may be using the restaurant she owns as a drug front; Erin is accused of causing the suicide of a former colleague; Danny and Baez are faced with various descriptions of the same suspect.
S13, EP15 "Close to Home"
Danny partners with Texas Ranger Waylon Gates to deliver an infamous drug cartel boss to arraignment, but the mission becomes complicated when the criminal threatens to harm the Reagans; Erin takes on a highly contentious assault case.
S13, EP14 "Collision Course"
Eddie's former partner returns and brings an accusation of excessive force against an officer; Danny and Baez clash with a troubled foster child at the center of their latest investigation; Erin must make a tough decision about her campaign.
S13, EP13 "Past History"
Danny and Baez race against the clock to catch a serial killer targeting young women; Erin and Eddie clash when Eddie intervenes in a murder case and Erin's personal life; Frank must decide how to discipline his grandson.
S13, EP12 "The Big Leagues"
Danny reunites with childhood friend and a former criminal Mickey Patrick, who comes to him for help finding his missing fiancee; Anthony surprises Erin with one last stakeout before her run for district attorney.
S13, EP11 "Lost Ones"
Danny and Baez's investigation into the death of a chess hustler is complicated by interference from the victim's son; Jamie tries to make amends with a man he regrets putting away as a young officer.
S13, EP10 "Fake It' Till You Make It"
Jamie and his new intel team officer infiltrate a high-tech car smuggling ring; Frank faces off against the city's transit chief over a program that is causing officer injuries on the job; Eddie asks Danny to help her bust a cop impersonator.
S13, EP9 "Nothing Sacred"
Frank and his grandson, Joe Hill, contend with a grievous insult to the memory of Joe's father; Erin and Henry work together to bust a scammer targeting the elderly; Eddie's captain takes suspicious interest in her efforts to locate a stolen puppy.
S13, EP8 "Poetic Justice"
Danny crosses paths with a criminal from a previous case when he investigates a gang attack with a shocking motive; Frank and Mayor Chase butt heads over an off-duty cop who goes too far making a political statement.
S13, EP7 "Heroes"
Erin and Anthony clash when Anthony's daughter is the sole eyewitness to a fatal shooting; Frank wants to punish an off-duty copy for his inaction during an armed robbery; Danny and Baez investigate a violent mugging.
S13, EP6 "On Dangerous Ground"
Danny and Jamie clash over a gang-related shooting; Erin and Anthony search for answers when a lawyer in their office jeopardizes a case involving Erin's nephew; Frank grows concerned when he's not invited to speak at a policing forum.
S13, EP5 "Homefront"
Frank launches an investigation after the Reagan family is harassed; Danny and Baez form an unlikely partnership with an informant in order to prevent a murder; Eddie lands in hot water after she defies a direct order.
S13, EP4 "Life During Wartime"
Danny and Baez investigate a series of violent robberies targeting luxury timepieces; Erin is conflicted about criminally charging a potentially innocent man; Frank is forced to reopen a case in which the officer involved was acquitted.
S13, EP3 "Ghosted"
Danny and Baez investigate after a vicious attack leaves their mutual friend, Maggie Gibson, hospitalized; Frank and the team debate the appropriate memorial protocol for a former police commissioner with a questionable professional legacy.
S13, EP2 "First Blush"
Frank announces he will not endorse Erin's run for district attorney; Danny and Baez investigate a bloody crime scene at a hotel; Jamie begins a new job as a field intelligence sergeant that requires him to keep secrets from his family.
S13, EP1 "Keeping the Faith"
Eddie and Jamie deal with a domestic violence case associated with an investigation led by Danny and Baez; Frank and his friend go on a mission to avail themselves to an unfiltered look at the city; Erin is presented with a surprising offer.