Blue Bloods

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.

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. Meanwhile, Frank is annoyed at having to meet the new Inspector General.

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 gangbanger dies after Jamie chases him away from the boy he is mentoring, Jamie's conduct is called into question.

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.

Danny and Baez investigate a homicide in which Baez's estranged brother, a former drug addict, is the lead suspect.

Danny and Baez investigate a local bombing, but encounter tension and resistance from the community as they investigate.

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.

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.

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. Karen Allen guest and Doug E. Doug guest star.

Danny and Baez investigate the murder of Tiffany Lamp, a popular drag queen from a reality television show who was found murdered in a local park.

When Danny and Baez investigate the kidnapping of a young girl who disappeared after school, it brings back difficult memories for Danny, who worked on a similar unsolved case years ago.

When Danny takes a call from a woman who is threatening to kill herself along with the man who killed her parents in a drunk driving accident, he rushes to find her.

Danny and Baez investigate when an expectant mother is a victim of a "knockout game," in which teenagers punch unsuspecting civilians in the head.

Danny and Baez investigate the death of a woman whose body was dumped after she was killed by a lethal dose of lidocaine following secret plastic surgery. Meanwhile, Frank privately assigns Jamie a cold case and Erin tries out speed dating. Holt McCallany guest stars.

Danny and Baez investigate the murder of a respected college professor who was involved with a questionable scholarship program.

Erin is assigned to investigate a case in which an on-duty police officer is accused of killing a suspect already in custody.

When a detective from Danny's precinct is killed while working undercover, Frank puts on a full-court press to find his killer, only to discover that the deceased had a big secret.

When Danny is placed on modified duty after investigating a case that was off-limits, he realizes he stumbled upon something that someone is trying to keep quiet in the fourth season finale.