
| Jacqueline McKenzie | ... | Diana Skouris / ... (43 episodes, 2004-2007) |

| Joel Gretsch | ... | Tom Baldwin (42 episodes, 2004-2007) |

| Patrick Flueger | ... | Shawn Farrell (42 episodes, 2004-2007) |

| Conchita Campbell | ... | Maia Rutledge / ... (42 episodes, 2004-2007) |
 | Chad Faust | ... | Kyle Baldwin (33 episodes, 2004-2007) |

| Richard Kahan | ... | Marco Pacella (32 episodes, 2004-2007) |

| Mahershalalhashbaz Ali | ... | Richard Tyler (31 episodes, 2004-2007) |

| Bill Campbell | ... | Jordan Collier (26 episodes, 2004-2007) |

| Megalyn Echikunwoke | ... | Isabelle Tyler (25 episodes, 2006-2007) |

| Samantha Ferris | ... | Nina Jarvis (23 episodes, 2005-2006) |

| Kavan Smith | ... | Jed Garrity (21 episodes, 2005-2007) |

| Laura Allen | ... | Lily Moore Tyler (18 episodes, 2004-2007) |

| Kaj-Erik Eriksen | ... | Danny Farrell (16 episodes, 2004-2007) |
 | Jeffrey Combs | ... | Kevin Burkhoff (15 episodes, 2005-2007) |

| Karina Lombard | ... | Alana Mareva (14 episodes, 2005-2006) |

| Jody Thompson | ... | Devon (14 episodes, 2005-2007) |
 | Jenni Baird | ... | Meghan Doyle (13 episodes, 2007) |

| Peter Coyote | ... | Dennis Ryland (12 episodes, 2004-2006) |
 | Chilton Crane | ... | Susan Farrell (12 episodes, 2004-2007) |

| Garret Dillahunt | ... | Matthew Ross (11 episodes, 2005-2006) |
 | Jordan Lasorsa-Simon | ... | Isabelle / ... (11 episodes, 2005-2007) |

| Natasha Gregson Wagner | ... | April Skouris (9 episodes, 2005-2007) |

| Graeme Duffy | ... | Brady Wingate (9 episodes, 2005-2007) |

| Tristin Leffler | ... | Cassie Dunleavy (8 episodes, 2007) |

| Sean Devine | ... | P.J. (8 episodes, 2005-2007) |

| Summer Glau | ... | Tess Doerner (8 episodes, 2005-2007) |

| Brooke Nevin | ... | Nikki Hudson (7 episodes, 2004-2006) |

| Jennifer Spence | ... | Joanna (7 episodes, 2007) |
 | Brennan Elliott | ... | Ben Saunders (6 episodes, 2006-2007) |

| Kathryn Gordon | ... | Heather Tobey (6 episodes, 2005-2007) |

| Lori Ann Triolo | ... | Linda Baldwin (6 episodes, 2004-2005) |

| Andrew Airlie | ... | Brian Moore (6 episodes, 2004-2005) |

| Ingrid Torrance | ... | Lucy / ... (6 episodes, 2004-2005) |
 | Leanne Adachi | ... | T.J. Kim / ... (5 episodes, 2004-2006) |

| Lexa Doig | ... | Wendy Paulson (4 episodes, 2005) |
 | Jonathan Holmes | ... | Dr. Mayhew (4 episodes, 2004-2006) |

| Genevieve Buechner | ... | Heidi Moore (4 episodes, 2004-2005) |
 | Sharif Atkins | ... | Gary Navarro (3 episodes, 2005-2006) |
 | Penny Johnson | ... | Rebecca Parrish (3 episodes, 2007) |

| Lindy Booth | ... | Liv (3 episodes, 2005) |
 | Ian Tracey | ... | Daniel Armand (3 episodes, 2006) |

| Sean Marquette | ... | Boyd Gelder (3 episodes, 2006) |

| Rob LaBelle | ... | Dr. Nicholas Clayton (3 episodes, 2005-2007) |
 | Alexia Fast | ... | Lindsey Hammond (3 episodes, 2006-2007) |

| Tom Verica | ... | Dr. Max Hudson (3 episodes, 2005) |
 | Matthew Gray | ... | Tyler Downing (3 episodes, 2006) |
 | Nancy Sivak | ... | Dr. Anapurn (3 episodes, 2006) |
 | Julia Tortolano | ... | Amy Paspalis (3 episodes, 2006) |
 | Jason Low | ... | Sid Stradner (3 episodes, 2004) |
 | Tom McBeath | ... | Will / ... (3 episodes, 2006-2007) |
 | Alice Krige | ... | Sarah (2 episodes, 2006) |
 | Kevin Tighe | ... | Senator Lenhoff (2 episodes, 2007) |

| Tim DeKay | ... | Drew Imroth (2 episodes, 2007) |

| Mark Valley | ... | Warren Lytell (2 episodes, 2004) |

| Todd Giebenhain | ... | Curtis Peck (2 episodes, 2007) |
 | Martin Cummins | ... | Gabriel Hewitt (2 episodes, 2007) |

| Pascale Hutton | ... | Abigail Hunnicutt (2 episodes, 2007) |

| Keegan Connor Tracy | ... | Alison Driscoll (2 episodes, 2005) |

| Helen Shaver | ... | Barbara Yates (2 episodes, 2004) |

| Hiro Kanagawa | ... | Agent Park (2 episodes, 2005) |
 | Greg Anderson | ... | Lloyd (2 episodes, 2007) |
 | Julian Christopher | ... | Judge Biederman (2 episodes, 2005-2006) |

| Cainan Wiebe | ... | Duncan Germaine (2 episodes, 2006) |
 | Shawn Reis | ... | Guard / ... (2 episodes, 2004-2006) |
 | Jason Benson | ... | 2nd Intruder / ... (2 episodes, 2005-2007) |

| Christie Laing | ... | Actor Playing Isabelle / ... (2 episodes, 2005-2007) |
 | Christie Wilkes | ... | Rose Woodard (2 episodes, 2005) |
 | Roger Haskett | ... | Maia's Father / ... (2 episodes, 2004-2007) |

| Mark Brandon | ... | Paul Beckman / ... (2 episodes, 2006-2007) |
 | Matias Hacker | ... | Janitor (2 episodes, 2005) |

| Sean O. Roberts | ... | Wayne (2 episodes, 2005) |
 | Colleen Winton | ... | Ruth (2 episodes, 2005) |

| Carrie Fleming | ... | Maia's Mother / ... (2 episodes, 2004-2007) |

| Daniella Evangelista | ... | Karen / ... (2 episodes, 2005) |
 | Sean Pratt | ... | Paul Newbold (2 episodes, 2006) |
 | John Moore | ... | Meghan's Father (2 episodes, 2007) |

| Valerie Sing Turner | ... | Eden Standish (2 episodes, 2005) |

| Tanya Hubbard | ... | Tina Richardson (2 episodes, 2006) |
 | Mark Gibbon | ... | Aaronson / ... (2 episodes, 2005-2007) |
 | Nicholas W. von Zill | ... | Middle-Aged Man / ... (2 episodes, 2004-2005) |
 | Julius Chapple | ... | Agent Falcone / ... (2 episodes, 2004-2005) |
 | Jocelyne Loewen | ... | Morgue Attendant / ... (2 episodes, 2004-2006) |

| Colin Cunningham | ... | Ryan / ... (2 episodes, 2004-2007) |

| Craig March | ... | Joe / ... (2 episodes, 2004-2005) |
 | Marshall Caplan | ... | Doherty (2 episodes, 2005) |

| Patricia Harras | ... | Carol / ... (2 episodes, 2005-2006) |

| Scott E. Miller | ... | Orderly (2 episodes, 2006) |
|
| Ira Steven Behr | .... | executive producer (42 episodes, 2004-2007) |
| Scott Peters | .... | executive producer / co-executive producer (42 episodes, 2004-2007) |
| Maira Suro | .... | executive producer (42 episodes, 2004-2007) |
| Ben Brafman | .... | associate producer (20 episodes, 2006-2007) |
| Kathy Gilroy-Sereda | .... | producer (20 episodes, 2006-2007) |
| Craig Sweeny | .... | supervising producer / producer (20 episodes, 2006-2007) |
| Mark Kruger | .... | producer (13 episodes, 2007) |
| Robert Hewitt Wolfe | .... | consulting producer (12 episodes, 2004-2007) |
| Darcy Meyers | .... | supervising producer (7 episodes, 2006) |
| Bruce Miller | .... | co-executive producer (7 episodes, 2006) |
| Perry Simon | .... | executive producer (7 episodes, 2006) |
| René Echevarria | .... | executive producer (5 episodes, 2004) |
| William Redner | .... | co-producer / consulting producer (5 episodes, 2004) |
|
| Frederick Rappaport | .... | consulting producer (unknown episodes) |
| |
|
| Anke Bakker | .... | sound supervisor / sound (37 episodes, 2005-2007) |
| Megan Goudsward | .... | background sound editor (25 episodes, 2004-2006) |
| Bill Mellow | .... | sound re-recording mixer / re-recording mixer (24 episodes, 2006-2007) |
| Brian Campbell | .... | dialogue editor (21 episodes, 2006-2007) |
| Joshua Stevenson | .... | assistant dialogue editor (21 episodes, 2006-2007) |
| Ken Cade | .... | sound designer / sound effects editor (18 episodes, 2004-2007) |
| Mike Paprocki | .... | sound effects editor (17 episodes, 2006-2007) |
| Lars Ekstrom | .... | sound mixer / production sound mixer (16 episodes, 2005-2006) |
| Iain Pattison | .... | sound re-recording mixer (14 episodes, 2004-2007) |
| Kelly Cole | .... | sound re-recording mixer / re-recording mixer (14 episodes, 2006-2007) |
| Mike Gardner | .... | boom operator (12 episodes, 2005) |
| Kevin Konarzewski | .... | adr mixer (12 episodes, 2005) |
| Darryl Marko | .... | sound assistant (12 episodes, 2005) |
| Glen Noseworthy | .... | adr mixer (12 episodes, 2006) |
| Michael T. Williamson | .... | production sound mixer (10 episodes, 2007) |
| Matt Dawson | .... | adr mixer (8 episodes, 2007) |
| Belinda Pattison | .... | assistant sound editor (7 episodes, 2007) |
| Todd R. Mason | .... | sound effects recordist (5 episodes, 2004) |
| Kevin Belen | .... | adr recordist / sound re-recording mixer (4 episodes, 2004-2007) |
| Paul A. Sharpe | .... | sound re-recording mixer (4 episodes, 2004-2007) |
| Alex Raspa | .... | adr mixer: New York (4 episodes, 2004) |
| Dave Hibbert | .... | sound re-recording mixer (3 episodes, 2004) |
| David M. Cyr | .... | production sound mixer (3 episodes, 2007) |
| Steve Schatz | .... | adr mixer (2 episodes, 2004) |
| Graeme Hughes | .... | sound re-recording mixer (2 episodes, 2006) |
|
| Kris Casavant | .... | sound editor (unknown episodes) |
| Mark Klausmayer | .... | sound re-recording mixer (unknown episodes) |
| Adam Sharpe | .... | adr mixer / sound re-recording mixer (unknown episodes) |
| Carmen Verin | .... | sound assistant (unknown episodes) |
| |
|
| Josephine Ochej | .... | assistant: Scott Peters / production associate / ... (42 episodes, 2004-2007) |
| Adam Levy | .... | assistant to executive producer / assistant to executive producers (18 episodes, 2004-2007) |
| Michelle Almaz Tadege | .... | production coordinator (18 episodes, 2006-2007) |
| Amy Berg | .... | executive story editor / story editor (18 episodes, 2006-2007) |
| Clark Candy | .... | production coordinator (18 episodes, 2006-2007) |
| Andrew Colville | .... | executive story editor / story editor (18 episodes, 2006-2007) |
| Kymn Brettoner | .... | production accountant (17 episodes, 2006-2007) |
| Wendy Mclean | .... | script supervisor (16 episodes, 2004-2007) |
| Andrew Marles | .... | assistant location manager (15 episodes, 2005-2007) |
| Neil Levin | .... | script coordinator (14 episodes, 2006-2007) |
| Neil Williams | .... | script coordinator (14 episodes, 2006-2007) |
| Scott Steyns | .... | playback coordinator (12 episodes, 2005) |
| Paul Jasper | .... | animal coordinator (12 episodes, 2006) |
| Nelly Hugh-Jones | .... | assistant to executive producer (12 episodes, 2007) |
| Sabrina Karine | .... | production assistant (11 episodes, 2005-2006) |
| Elisha Schaff | .... | production assistant (7 episodes, 2007) |
| Dennis Swartman | .... | location manager (7 episodes, 2007) |
| Danny McWilliams | .... | location manager (6 episodes, 2007) |
| Nathan Holley | .... | production assistant (5 episodes, 2004) |
| Jessica Brajoux | .... | production assistant (5 episodes, 2005-2006) |
| Marcus Goodwin | .... | production assistant (5 episodes, 2006) |
| Rafe Judkins | .... | assistant to writers (5 episodes, 2006) |
| David Sperber | .... | publicist (5 episodes, 2007) |
| Helga Ungurait | .... | script supervisor (5 episodes, 2007) |
| Lukasz Madziag | .... | office production assistant (4 episodes, 2005-2007) |
| Tim Haughian | .... | location manager (3 episodes, 2004) |
| Jeff Pickett | .... | assistant to executive producer (3 episodes, 2006-2007) |
| Allan J. Ross | .... | key production assistant (2 episodes, 2004) |
|
| Michael Bendner | .... | production assistant (unknown episodes) |
| Kerri Boyce | .... | accounting assistant (unknown episodes) |
| Ron Buck | .... | police technical advisor (unknown episodes) |
| Byron Drinkle | .... | playback coordinator (unknown episodes) |
| Dana Dubé | .... | animal trainer (unknown episodes) |
| Dani Elias | .... | assistant to producer (unknown episodes) |
| Luke King | .... | key production assistant (unknown episodes) |
| Dan Kuzmenko | .... | assistant location manager (unknown episodes) |
| Nathan Lomax | .... | production assistant (unknown episodes) |
| Sheri Mayervich | .... | location manager (unknown episodes) |
| |