When an armed robbery ends with the death of a police officer, Frank makes it a mission for the NYPD to bring the suspect to justice.

When a famous movie star, Russell Berke, who shadowed Danny for research on his next role, is stabbed, Danny goes to his aid, but must keep the crime on the down-low due to Russell's celebrity status. Marc Blucas guest stars.

Danny becomes the lead hostage negotiator when a prime informant in a large drug case holds Erin at gunpoint inside the courtroom.

Danny and Baez investigate the death of a teenage girl who appears to have been pushed in front of a subway car by a homeless man.

When Danny and Baez suspect a little girl might be the victim of a kidnapping, the girl's mother denies it, but her story doesn't add up.

When a gang-banger gets hit by a car and becomes paralyzed when Jamie chases him away from the boy he is mentoring, Jamie's conduct is called into question. Meanwhile, Baez goes undercover to get information on Danny's ex-girlfrie...

When an officer is accused of using excessive force on a suspect, Frank finds his department under scrutiny from the community and the mayor.

Following Frank's dinner with mob lawyer Angelo Gallo, Gallo is shot, and Frank narrowly escapes with his own life. Meanwhile, Danny is called for jury duty, and winds up being the sole dissenting opinion in a murder trial.

Danny and Baez investigate a homicide in which Baez's estranged brother, a former drug addict, is the lead suspect. Meanwhile, Frank learns one of his most highly decorated officers, a German Shepherd in the K9 unit, is being accu...

Danny and Maria investigate a local bombing, but are met with tension and resistance from the community during the investigation. Meanwhile, Frank must deal with the political fallout when a man punches an officer who was overly a...

Danny's loyalty is tested when he is assigned to the case of a childhood friend, Mickey, who is under investigation for having ties to an infamous mob family. Meanwhile, Frank gets word that crime is on the rise due to a recent ju...

When Danny learns from Nicky that there's a deadly new brand of heroin hitting the streets, he begins an all-out manhunt for the distributor. Meanwhile, Frank pulls out all the stops to assist in getting the drugs off the street.

Danny and Maria must track down an Army veteran who Danny thinks is suffering from PTSD. Meanwhile, Frank is caught off-guard during a press conference by a woman who is seeking justice for her murdered daughter.

Danny and Baez investigate the murder of Tiffany Lamp, a popular drag queen who was found murdered in a local park. Meanwhile, Erin reexamines a drug case scheduled for trial after she is abducted by the accused man's mother.

A young girl's abduction reminds Danny of an unsolved case he worked on years ago. Elsewhere, Frank angers the inspector general when he won't reveal info about a program involving intelligence officers overseas.

Jamie get a fake phone number from a sexy bicycle messenger who he later discovers is using counterfeit $50s. A woman named Jill calls Danny threatening to end her life. Frank chaperones Sean's school field trip to a museum.

Danny and Maria investigate when an expectant mother is a victim of a "knockout game," in which teenagers punch unsuspecting civilians in the head. Meanwhile, Frank wrestles with promoting an officer when he thinks it can be viewe...

Danny and Baez investigate the death of a woman whose body was dumped after she was killed by a lethal dose of Fentanyl, following secret plastic surgery. Meanwhile, Frank privately assigns Jamie a cold case, and Erin tries out sp...

Danny and Maria investigate the murder of a respected college professor who was involved with a questionable scholarship program. Meanwhile, Danny discovers that his father didn't tell him that the District Attorney is investigati...

When Erin is assigned to investigate a case in which an on-duty police officer is accused of killing a suspect already in custody, Frank urges her to stick to the facts to avoid a publicity scandal for the NYPD. Meanwhile, Jamie u...

An undercover cop is shot. An investigation shows that the cop had personal secrets. A junkie approaches Erin asking for help, but when Erin recognizes him as a friend of Nicky, he runs away. Nicky asks Erin and Jamie to help find...

Danny gets himself into trouble after being told not to pursue a suicide case of a C.I. of the D.A. Jamie and Janko get involved in an immigration case of couple wanting to get married, but the bride's father is against them.