Elenco Principal da Temporada 4

1. 

   Vincent D'Onofrio

   Robert Goren

2. 

   Kathryn Erbe

   Alexandra Eames

3. 

   Courtney B. Vance

   Ron Carver

4. 

   Jamey Sheridan

   James Deakins

Convidados Especiais 24

1. 

   Matt Damon

   Self (voice)

2. 

   Pablo Schreiber

   Ed Lang

3. 

   Kat Foster

   Kelly West

4. 

   Christine Farrell

   Forensics Technician Arlene Shrier

5. 

   Jeff Hephner

   Michael Pike

6. 

   Jicky Schnee

   Dana Candon

7. 

   Jayne Houdyshell

   Ruth Pear

8. David Dollase

   Stefan Calos

9. 

   Arthur Acuña

   Johnny Santos

10. 

    Lawrence Winslow

    Detective Draper

11. Iraida Polanco

    Carletta Cabezas

12. 

    Richard Duva

    Forensic Technician Shore

13. 

    William Prael

    Kelly's Attorney

14. 

    Joanie Ellen

    Julie

15. 

    Fiona Choi

    Lisa

16. Salvatore Inzerillo

    Jack

17. Gio Perez

    Diego Cabezas

18. 

    Ernest Mingione

    Miller

19. Linda Thompson Williams

    Joyce

20. 

    Cheryse Dyllan

    Margie

21. 

    Glenn Kalison

    Ashworth

22. Cary Wong

    Chan

23. 

    Jim Wisniewski

    Lee

24. 

    Derek Peith

    Brooks

Equipa Técnica 2