Season Regulars 6

1. 

   Tom Selleck

   Frank Reagan

2. 

   Donnie Wahlberg

   Danny Reagan

3. 

   Bridget Moynahan

   Erin Reagan-Boyle

4. 

   Will Estes

   Jamie Reagan

5. 

   Len Cariou

   Henry Reagan

6. 

   Abigail Hawk

   Abigail Baker

Guest Stars 18

1. 

   Amy Carlson

   Linda Reagan

2. 

   Andrew Terraciano

   Sean Reagan

3. 

   Tony Terraciano

   Jack Reagan

4. 

   Sami Gayle

   Nicky Reagan-Boyle

5. 

   Nick Sandow

   Lt. Alex Bello

6. 

   Michael T. Weiss

   Sonny Malevsky

7. 

   Sean Patrick Reilly

   Al Cleary

8. 

   Mike Colter

   Cliff Reacher

9. 

   Natalie Knepp

   Laura Peck

10. 

    James Snyder

    Billy Coffin

11. 

    Robert Turano

    Captain

12. 

    Ezra Knight

    Don Sperling

13. 

    Michael J. Burg

    Detective Trotta

14. 

    Jordan Lage

    Damon Camia

15. 

    Becky London

    Alice O'Brien

16. 

    John Speredakos

    Gerry O'Brien

17. John Mainieri

    Father Duff

18. 

    Mark Armstrong

    Will Atwater

Crew 2