Danny must track down the drug cartel that attacked a convoy transporting drugs to be incinerated, leaving Baez seriously injured; Frank must tread carefully when a lieutenant's actions cause controversy for the police department.
Jamie stands up for a fellow officer who is being ostracized for testifying against her partner; sports analyst Boomer Esiason makes a difficult request of Frank.
When an officer is outed and his partner refuses to ride with him, Danny and Baez are asked to work with new partners temporarily; Eddie and James try to steal a collar from a pompous detective; Frank speaks out about equality on the force.
Frank is put in a tough spot when Danny is charged with using excessive force; Jamie brings a homeless man to the hospital and hits it off with an attractive doctor.
Jamie becomes a target after intervening in an abusive relationship between a thug and his girlfriend; an illegal recording of Henry making insensitive comments is leaked to the press.
Danny and Frank must find enough evidence to finally put away an international felon who has a history of walking away from charges; Erin considers going into private practice; Danny and his new boss butt heads.
Frank is taken by surprise during an on-air interview; Danny and his new boss clash as they investigate a drive-by shooing.
When an officer's body camera malfunctions during an altercation, Frank is faced with public backlash; Baez and Danny step in when a witness is denied protection by the U.S. Marshals Service; Erin looks into a rape claim made by a friend's daughter.
When three prominent community leaders are murdered, they seem to be casualties of hate crimes; after being mugged, Linda decides to carry a gun.
Frank looks for evidence against a suspected cop killer; Danny and Baez investigate the murders of stars of adult films.
When a group of highly trained Army veterans robs a bank, Danny feels conflicted; a street artist is responsible for a bomb scare in a subway.
A homeless teenager claims his aunt was murdered by her boyfriend; Erin is replaced on a case involving a corrections officer.
When a homeowner shoots an intruder, surprising information is revealed; Erin starts to doubt herself when a 12-year-old case is reopened.
A resident of the low-income section of a luxury apartment building is murdered; Frank is upset with a detective who takes advantage of legal loopholes.
Erin must bring a mob informant back to New York to help with a case after losing her star witness; Frank and Mayor Poole debate about police officer benefits.
When Baez serves a distraught man with a restraining order, he holds her at gunpoint in an interrogation room; Garrett asks Frank for help.
An unknown assailant breaks into Erin's apartment; Eddie and Jamie find a pipe bomb in a woman's apartment; Frank investigates a charity soliciting a donation from the NYPD.
Eddie goes under cover to investigate a kidnapping ring that targets young women through fake hostel websites; a woman Frank met early in his career wants to meet the inmate who killed her family.
An investigative journalist refuses to give up a source, even when the source admits to committing murder; Danny works with a troubled teenager as part of a NYPD program intended to help troubled youth.
When a suspect confesses to murdering a celebrity chef, Baez and Danny don't believe him; a longtime friend's request for help puts Frank in a tough position.
Frank orders everyone to help investigate when NYPD Deputy Chief Donald Kent and his wife are gunned down in what appears to be a gang hit.