Stagioni Regolari 7

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. 

   Nina Garbiras

   Andrea Little, a reporter (season one)

6. 

   Lana Parrilla

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

7. 

   Jason Gedrick

   Police Department Police Officer II Tom Turcotte

Guest Stars 8

1. 

   Arlen Escarpeta

   Cantrel LaFontaine

2. 

   Kim Murphy

   Susan

3. 

   Kelly Rowan

   Marian McNorris

4. 

   Marquise Wilson

   Friend #3

5. 

   Paige Hurd

   Grace Adams

6. 

   Kristin Bauer

   Prostitute

7. 

   Garikayi Mutambirwa

   Friend #2

8. 

   Brian Sites

   Taylor Gates

Troupe 2