Season Regulars 6

1. 

   Donnie Wahlberg

   Detective Joel Stevens

2. 

   Neal McDonough

   Assistant District Attorney David McNorris

3. 

   Mykelti Williamson

   Police Department Detective II Bobby 'Fearless' Smith

4. 

   Gary Basaraba

   Police Department Police Officer III Ray Hechler

5. 

   Lana Parrilla

   Teresa Ortiz, paramedic in season one, rookie police officer in season two

6. 

   Jason Gedrick

   Police Department Police Officer II Tom Turcotte

Guest Stars 10

1. 

   Daniel Zacapa

   Carlos Ramirez

2. 

   Beau Billingslea

   Police Academy Commandant

3. 

   Ken Davitian

   Jewelry Store Owner

4. 

   Doug Hutchison

   Wally Pollard

5. 

   Vanessa Williams

   Detective Katherine Pierce

6. 

   Dorian Harewood

   Captain Ronald Hicks

7. 

   Lombardo Boyar

   Eddie

8. 

   Anthony Montgomery

   Recruit Dwight Baker

9. Dakota Floeter

   Young Wally Pollard

10. 

    Mark Totty

    Chip Pollard

Crew 1