Series episode
| Donnie Wahlberg | ... | Danny Reagan |
| Bridget Moynahan | ... | Erin Reagan-Boyle |
| Will Estes | ... | Jamie Reagan |
| Len Cariou | ... | Henry Reagan |
| Tom Selleck | ... | Frank Reagan |
| Amy Carlson | ... | Linda Reagan |
| Nicholas Turturro | ... | Sgt. Anthony Renzulli |
| Yvonna Kopacz Wright | ... | Ava Hotchkiss |
| Frankie Faison | ... | Jeffords |
| Robert Clohessy | ... | Sgt. Gormley |
| Victor Williams | ... | Oliver |
| Carlton Byrd | ... | Handsome |
| Aja Naomi King | ... | Denise |
| Hannah Hodson | ... | Yolanda |
| Colleen Clinton | ... | Agent Anderson |
| Andrea Roth | ... | Kelly Davidson |
| Tony Terraciano | ... | Jack Reagan |
| Andrew Terraciano | ... | Sean Reagan |
| Abigail Hawk | ... | Detective Melissa Baker |
| Sai Rao | ... | Jennings |
| Kareem Savinon | ... | Danito |
| Megan Byrne | ... | Lawyer |
| Michael Devine | ... | Guard |
| Ian Bedford | ... | Guard |
| Mike Havok | ... | Subway Victim |
| Laurence Blum | ... | Cop |
| Jennifer Butler | ... | Detective |
| Peter Conboy | ... | NYPD Crime Tech |
| Mousa Kraish | ... | Khalid Hassan |
| Corey Michael Lincoln | ... | Lee Cranston |
| Haas Manning | ... | Jason |
| Brett McClelland | ... | Crime Scene Tech |
| William Mercado | ... | Handball Player |
| Elli | ... | Rabbi Elli |
| Danielle Montezinos | ... | Subway Victim |
| Dorothea Swiac | ... | Subway Witness |
| Steven Weisz | ... | Court Officer |
| Ralph Hemecker | ... | Direction |
| Ken Sanzel Ken Sanzat | ... | Script |