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 |
| Dylan Moore | ... | Sydney Davenport |
| Bruce Altman | ... | Mayor Frank Russo |
| Robert Clohessy | ... | Sgt. Gormley |
| Ronald Guttman | ... | Claudio Calso |
| James Colby | ... | Walter Ryder |
| Florencia Lozano | ... | Sophia Calso |
| James Preston | ... | Blake Woods |
| Andrea Roth | ... | Kelly Davidson |
| Tony Terraciano | ... | Jack Reagan |
| Andrew Terraciano | ... | Sean Reagan |
| Abigail Hawk | ... | Detective Melissa Baker |
| Raul Casso | ... | Sebastian Calso |
| Alexandra Metz | ... | Courtney Thurman |
| Melissa Benoist | ... | Renee |
| Edward Cordiano | ... | Vincent Harrah |
| Chris Fischer | ... | Cop |
| Albert Christmas | ... | Cop |
| Lars Stevens | ... | Pietro |
| Philip Hoffman | ... | Lawyer |
| Brigitte Viellieu-Davis | ... | Rosario |
| Lawrence Ballard | ... | Willis |
| Alexis Suarez | ... | Cop |
| Peter Conboy | ... | NYPD Crime Tech |
| Moe Hindi | ... | Detective |
| Yvonna Kopacz Wright | ... | Ava Hotchkiss |
| Liz Logan | ... | Dominican Woman |
| Peter Riga | ... | Man on Street |
| Melanie Torres | ... | Attractive Business Woman |
| Darly Wanatick | ... | Precinct Core Player |
| Steven Weisz | ... | Cop |
| Stephen Gyllenhaal | ... | Direction |
| Brian Burns | ... | Script |