Season Four of Blue Bloods premiered on September 27, 2013.
In credits order
- Donnie Wahlberg as Daniel "Danny" Reagan, Detective.
- Bridget Moynahan as Erin Reagan, Assistant District Attorney and single mother.
- Will Estes as Jamison "Jamie" Reagan, rookie police officer and recent Harvard Law graduate.
- Len Cariou as Henry Reagan, retired Police Commissioner, father of Frank and grandfather of Danny, Erin and Jamie.
- Tom Selleck as Francis "Frank" Reagan, Police Commissioner and widowed father.
Also Starring CastEdit
- Amy Carlson as Linda Reagan, wife of Danny.
- Sami Gayle as Nicole "Nicky" Reagan-Boyle, Erin's daughter.
- Marisa Ramirez as Maria Baez, Danny's partner
|01||Unwritten Rules||September 27, 2013|
|When a robber flees after a jewelry store heist, Jamie and new partner Eddie Janko (Vanessa Ray) arrive on the scene just in time to hear a gunshot that takes out another officer. The suspect escapes through a nearby park. Danny and Maria are assigned the case, and Danny is certain that a man named Angelo (Malcolm Goodwin) who was witnessed at both the jewelry store and in the park, is the shooter. When an elderly eyewitness struggles to identify Angelo in a photo lineup, Danny “helps” her, and she later picks him out of a live lineup. Erin is certain that the woman’s testimony won’t survive cross-examination in court, and is forced to let Angelo go. This gets her in hot water with her family, her boss and most of the NYPD officers. Several officers create a “blue flu” situation by refusing to appear at other court cases involving Erin’s office, forcing Frank to order an end to the blue flu. In the end, Erin and Danny team up to stage a situation wherein Angelo can confess and get a deal for only seven years in prison. They then trick him into declining the deal (with Angelo unaware that his confession is still binding), and they book him for Murder One.|
|02||The City That Never Sleeps||October 4, 2013|
|03||To Protect and Serve||October 11, 2013|
|04||The Truth About Lying||October 18, 2013|
|05||Lost and Found||October 25, 2013|
|06||Growing Boys||November 1, 2013|
|07||Drawing Dead||November 8, 2013|
|08||Justice Served||November 15, 2013|
|09||Bad Blood||November 22, 2013|
|10||Mistaken Identity||December 13, 2013|
|11||Ties That Bind||December 20, 2013|
|12||The Bogeyman||January 10, 2014|
|13||Unfinished Business||January 10, 2014|
|14||Manhattan Queens||January 10, 2014|
|15||Open Secrets||February 28, 2014|
|16||Insult to Injury||March 7, 2014|
|17||Knockout Game||March 14, 2014|
|18||Righting Wrongs||April 4, 2014|
|19||Secret Arrangements||April 11, 2014|
|20||Custody Battle||April 25, 2014|
|21||Above and Beyond||May 2, 2014|
|22||Exiles||May 9, 2014|