 | John Walsh | ... | Himself / ... (165 episodes, 1988-2009) |

| Don LaFontaine | ... | Announcer (70 episodes, 1991-2008) |

| Patrick Michael Strange | ... | Hotline Operator / ... (32 episodes, 2006-2009) |
 | David Gandy | ... | Hotline Operator (16 episodes, 2008-2009) |

| Jacque Temple | ... | Hotline Operator / ... (14 episodes, 2005-2009) |
 | Chad Tyler | ... | Hotline Operator (13 episodes, 2008-2009) |

| Michael J. Shapiro | ... | Hotline Operator / ... (12 episodes, 2008-2009) |

| Wes Johnson | ... | Announcer / ... (10 episodes, 1998-2008) |
 | John Celia | ... | Hotline Operator (10 episodes, 2008) |
 | Hamilton Willis | ... | Hotline Operator / ... (9 episodes, 2006-2009) |
 | Lisa Whitt | ... | Hotline Operator (9 episodes, 2008) |
 | Joey Cabrera | ... | Hotline Operator / ... (8 episodes, 2002-2009) |
 | Tom Cutler | ... | Ken Cofer (8 episodes, 2005-2008) |
 | Karen Carbone | ... | Hotline Operator / ... (7 episodes, 2008-2009) |

| Oscar McFarlane | ... | Michael Alfonso (6 episodes, 2001-2004) |

| Lynn-Jane Foreman | ... | Hotline Operator (6 episodes, 2008-2009) |
 | Larry Boyd | ... | Hotline Operator (6 episodes, 2008) |

| Jay Amor | ... | P / ... (5 episodes, 1988-2007) |

| Aylam Orian | ... | Marjan Rroku (4 episodes, 2006-2009) |

| Aaron Michael Lacey | ... | Metro Passenger / ... (4 episodes, 2002-2007) |
 | Jon Leiberman | ... | Himself / ... (4 episodes, 2006-2008) |

| Rebecca Compton | ... | Crystal Rhodes / ... (4 episodes, 2003-2007) |
 | Michelle Rae | ... | Cafe Waitress / ... (4 episodes, 2004) |
 | Trina Lloyd | ... | Hotline Operator (4 episodes, 2008) |

| Ken Arnold | ... | Paul Phillips / ... (3 episodes, 2006-2009) |

| Susanna Velasquez | ... | Carmen Miranda / ... (3 episodes, 1991-2006) |
 | Amber Nelson | ... | Alisha / ... (3 episodes, 1992-2009) |

| David Anthony Pizzuto | ... | Det. Tom Wills / ... (3 episodes, 1995-1998) |

| Alan Heitz | ... | Drunk Man in Bar Fight / ... (3 episodes, 1995-1997) |
 | Claudio Sad | ... | Gilad Ehrlich / ... (3 episodes, 1998-2008) |

| Kris Arnold | ... | Chris / ... (3 episodes, 2003-2007) |

| Mike D. Anderson | ... | Perpetrator / ... (3 episodes, 2005-2009) |

| Lorenzo Toledo | ... | PREDATOR / ... (3 episodes, 2006-2007) |

| J. Matthew Miller | ... | Hotline Operator / ... (3 episodes, 2008-2009) |
 | Anastasia Summers | ... | Police Officer / ... (3 episodes, 2008) |

| Roberto Escobar | ... | Menendez / ... (2 episodes, 1988-1992) |

| Schatar Sapphira | ... | Georgette (2 episodes, 2004) |
 | C. Mark DeGaetani | ... | Bartender (2 episodes, 2006) |
 | Holly Paige Joyner | ... | Sexy girl (2 episodes, 2006) |
 | Jonathan Gibbs | ... | Cook (2 episodes, 2006) |

| Carlos Antonio | ... | Oscar Martinez / ... (2 episodes, 2004-2008) |
 | Frank Mammano | ... | Detective Walker (2 episodes, 2008) |
 | David Oliver | ... | Clinton Harriott (2 episodes, 2008) |
 | James Lewis | ... | Drug Lord - Lewis / ... (2 episodes, 2007-2008) |

| Adrian Martinez | ... | Jimmy Ruiz (2 episodes, 1993-1996) |
 | Eric Marseglia | ... | Scott Desano / ... (2 episodes, 1995-2008) |
 | Herb Otter Jr. | ... | James Colors / ... (2 episodes, 1995-2006) |
 | Joan Jett | ... | Herself (2 episodes, 1995-2001) |

| Mariana Tosca | ... | Debbie / ... (2 episodes, 1995-1996) |
 | John Wayland Somers | ... | Bar Patron (2 episodes, 1996-2002) |
 | Doug Traer | ... | Officer Lucke (2 episodes, 1997) |

| Omega Kayne | ... | Lorris Robinson (2 episodes, 1998-2002) |
 | Ray K. Morris | ... | Michael (2 episodes, 1998-1999) |
 | Jayson Vance | ... | Assailant / ... (2 episodes, 2000-2006) |

| Bobby DeAngelo | | (2 episodes, 2002-2005) |
 | Yumi Mizui | ... | Jenny Lieng / ... (2 episodes, 2002-2003) |

| Brandon Molale | ... | T.J. Weber (2 episodes, 2002) |

| Keith Michael Gregory | ... | David Beiber / ... (2 episodes, 2003-2004) |
 | Darwin Tademy Jr. | ... | Accomplice / ... (2 episodes, 2003) |

| Ambrit Millhouse | ... | Kisha Rutledge / ... (2 episodes, 2004-2009) |

| Jason Bartley | ... | Coast Guard Captain, Bahamas / ... (2 episodes, 2004-2006) |
 | Barbrette Roth | ... | Katherine / ... (2 episodes, 2004-2006) |

| Cleve Gray | ... | Churchgoer / ... (2 episodes, 2004-2005) |

| Lee Zagari | ... | Juan Nieto (2 episodes, 2004) |

| Britt Prentice | ... | Detective Fanchin / ... (2 episodes, 2005-2008) |

| Rita Manyette | ... | Bar Patron / ... (2 episodes, 2005-2006) |

| Lisa Wheeler | ... | Gym Member / ... (2 episodes, 2006-2007) |
 | Chono | ... | Jeff (2 episodes, 2007-2008) |
 | Glynis Gilio | ... | Tori Densley (2 episodes, 2007-2008) |
 | John Turchin | ... | Correspondent / ... (2 episodes, 2007-2008) |

| Bryan Ashby | ... | Detective Isenhoward / ... (2 episodes, 2007) |
 | Angeline Hartmann | ... | Herself / ... (2 episodes, 2007) |
 | Noreen Mao | ... | Carnapping victim / ... (2 episodes, 2007) |
 | James Pinckney II | ... | Dallas Boogeyman (2 episodes, 2007) |
 | Michelle Sigona | ... | Herself / ... (2 episodes, 2007) |
 | Laura Utt | ... | Kathy Smith (2 episodes, 2007) |
 | Wendell Jordan | ... | Kidnapper #4 / ... (2 episodes, 2008-2009) |

| Chad Guerrero | ... | Ricky Regalado / ... (2 episodes, 2008) |
 | Arnon Z. Shorr | ... | Hotline Operator (2 episodes, 2008) |

| Lisa Varga | ... | Cheryl (2 episodes, 2008) |

| Kim Tuvin | ... | Hotline Operator (2 episodes, 2009) |
 | Jon Campbell | ... | Himself - Investigator (2 episodes) |
|

| Allison Larned | ... | Gary's daughter (2005, Episode #150) (unknown episodes) |
|
| Dan Kavanaugh | .... | series producer / supervising producer (121 episodes, 1988-1990) |
| Michael Linder | .... | executive producer (120 episodes, 1988-1990) |
| Marcy Willmann | .... | producer / associate producer (19 episodes, 1995-1999) |
| Brian Lovett | .... | segment producer (14 episodes, 1995-1996) |
| Peter G. Gillespie | .... | producer (9 episodes, 2001-2009) |
| Lance Heflin | .... | executive producer (5 episodes, 1995-2009) |
| Amishjim Schulze | .... | associate producer (5 episodes, 1997-1998) |
| Cindy Miller | .... | producer (5 episodes, 2006-2009) |
| Miles A. Perman | .... | line producer / producer (4 episodes, 2005-2009) |
| Steve Katz | .... | co-executive producer / supervising producer (3 episodes, 2005-2009) |
| Nellie Zimmerman | .... | segment producer / producer (3 episodes, 2007) |
| Talin Hallajian | .... | line producer (3 episodes, 2008-2009) |
| Tony Zanelotti | .... | location producer / producer (2 episodes, 1995-2009) |
| Greg Klein | .... | executive producer (2 episodes, 2006-2007) |
| Jenna Griffiths | .... | producer (2 episodes, 2008-2009) |
| Sedgwick Tourison | .... | producer (2 episodes, 2008-2009) |
|
| Carl Buehl | .... | field producer (unknown episodes, 1995-2000) |
| Kara Kurcz | .... | field producer (unknown episodes, 2002) |
| Pam Lewis | .... | producer (unknown episodes, 2003) |
| Michael Bernstein | .... | field line producer (unknown episodes) |
| Cheryl Black | .... | segment producer (unknown episodes) |
| Joe Cacciotti | .... | field producer (unknown episodes) |
| Kenneth A. Carlson | .... | producer (unknown episodes) |
| Alissa Collins | .... | producer (unknown episodes) |
| John Driver | .... | coordinating producer (unknown episodes) |
| Cord Keller | .... | producer (unknown episodes) |
| David G. Knappe | .... | field producer (unknown episodes) |
| Peter Koper | .... | producer (unknown episodes) |
| John Latenser V | .... | line producer (unknown episodes) |
| Brian Matthew Lee | .... | associate producer (unknown episodes) |
| Stephanie L. Leonard | .... | field producer (unknown episodes) |
| Evan A. Marshall | .... | producer (unknown episodes) |
| Conor McCourt | .... | associate producer (unknown episodes) |
| Scott Owens | .... | associate producer (unknown episodes) |
| Donald Paonessa | .... | creative producer (unknown episodes) |
| Sam Rath | .... | producer (unknown episodes) |
| Ken Reichling | .... | segment producer (unknown episodes) |
| Todd Robinson | .... | producer (unknown episodes) |
| Karen S. Shapiro | .... | producer (unknown episodes) |
| Paula C. Simpson | .... | producer (unknown episodes) |
| |
|
| David Lewin | .... | sound designer: mixer (87 episodes, 2003-2009) |
| Mark Holland | .... | sound mixer (28 episodes, 1993-1996) |
| Mark Edmondson | .... | post audio mixer / sound designer: audio (20 episodes, 1997-1999) |
| Tammy Douglas | .... | sound mixer (3 episodes, 2005-2006) |
| Guillermo Pena-Tapia | .... | boom operator (3 episodes, 2005-2006) |
| Patrick Tillmann | .... | sound recordist (3 episodes, 2007-2008) |
| John A. Willingham | .... | sound mixer (2 episodes, 1999-2002) |
| Michael Keenan | .... | location sound mixer (2 episodes, 2004-2006) |
| William L. Kaplan | .... | sound recordist (2 episodes, 2006-2008) |
| Chris Durfy | .... | sound mixer (2 episodes, 2008) |
|
| Stephen Tibbo | .... | sound mixer (unknown episodes, 1999) |
| Jim Ridgley | .... | production sound mixer (unknown episodes, 2001) |
| John Austin | .... | sound recordist (unknown episodes) |
| Michael Baum | .... | location sound mixer (unknown episodes) |
| Hugh Boyle | .... | boom operator (unknown episodes) |
| Dwayne Dell | .... | sound mixer (unknown episodes) |
| Scott Jason Farr | .... | sound mixer (unknown episodes) |
| Harry Haese | .... | sound mixer (unknown episodes) |
| Daniel E. Hagan | .... | sound mixer (unknown episodes) |
| Benjamin Lowry | .... | sound mixer (unknown episodes) |
| Keith Michalek | .... | boom operator (unknown episodes) |
| Jenn Raudman | .... | sound mixer (unknown episodes) |
| Austin Storms | .... | sound mixer (unknown episodes) |
| Andrew Tills | .... | sound mixer (unknown episodes) |
| David Weinstock | .... | sound mixer (unknown episodes) |
| Rob Whitehurst | .... | sound recordist (unknown episodes) |
| |
|
| Chris Moreman | .... | first assistant camera (8 episodes, 1995-1998) |
| Rob Coughlin | .... | video assist operator (6 episodes, 2001-2006) |
| Paul Meehan | .... | key grip (5 episodes, 1992) |
| Richard Barrera | .... | first assistant camera: "a" camera / camera operator / ... (5 episodes, 2007-2009) |
| Robert Lowell | .... | first assistant camera: "b" camera (4 episodes, 2007-2009) |
| Bruce Ando | .... | camera operator: "b" camera (3 episodes, 2009) |
| Al Bruce | .... | electrician (2 episodes, 1992) |
| Zach Lazar | .... | electrician (2 episodes, 1997-2006) |
| Scott Inge | .... | first assistant camera: "a" camera / first assistant camera: "b" camera (2 episodes, 2002-2006) |
| Lee Lusby | .... | second assistant camera (2 episodes, 2006) |
| Phil Curry | .... | gaffer (2 episodes, 2007-2008) |
| Michael Deitch | .... | grip / set grip (2 episodes, 2007) |
| Christopher D. Jones | .... | best boy electric / electrician (2 episodes, 2007) |
| Patrick O'Donnell | .... | gaffer (2 episodes, 2008-2009) |
| Yuriy Zahviyskyy | .... | still photographer (2 episodes, 2008) |
| Noah Albro | .... | assistant camera / grip (2 episodes, 2009) |
|
| Christian Santiago | .... | director of photography: on-location (unknown episodes, 1999-2001) |
| Robert Stillman | .... | best boy grip (unknown episodes, 2003) |
| Keith Morgan | .... | gaffer (unknown episodes, 2004-2005) |
| Markus Davids | .... | underwater camera operator / underwater director of photography (unknown episodes, 2004) |
| Mike Ansbach | .... | camera operator (unknown episodes) |
| Jay Mack Arnette II | .... | grip (unknown episodes) |
| Toby Birney | .... | gaffer (unknown episodes) |
| Alan Degen | .... | assistant camera (unknown episodes) |
| Biff Delany | .... | gaffer (unknown episodes) |
| Jeff Diaz | .... | rigging grip (unknown episodes) |
| Carl Hamilton | .... | grip (unknown episodes) |
| Kenny Harris | .... | grip (unknown episodes) |
| Julie Helton | .... | second assistant camera (unknown episodes) |
| Louise Hernon | .... | electrician (unknown episodes) |
| Colin Hudson | .... | Steadicam operator (unknown episodes) |
| Alec Jarnagin | .... | camera operator (unknown episodes) |
| Eric M. Klein | .... | key grip: Washington D.C. (unknown episodes) |
| Matt Mayes | .... | camera operator (unknown episodes) |
| Bob Myers | .... | key grip (unknown episodes) |
| Mike Panczenko Jr. | .... | film loader (unknown episodes) |
| Daryl Pittman | .... | camera operator (unknown episodes) |
| James M. Reeves | .... | key grip: Florida (unknown episodes) |
| Jeremy Settles | .... | camera operator (unknown episodes) |
| J. Andrew Shaffer | .... | gaffer (unknown episodes) |
| L. Andrew Sigler | .... | best boy grip (unknown episodes) |
| |
|
| Michael J. Shapiro | .... | stand-in: John Walsh (15 episodes, 2008-2009) |
| J.D. Beales | .... | studio technician (12 episodes, 2007-2008) |
| Sasha Rivers | .... | production assistant (11 episodes, 2006-2007) |
| Reginald Saunders | .... | production assistant (8 episodes, 2008-2009) |
| John Brown | .... | location manager (3 episodes, 2006-2007) |
| Andrew R. Gardiner | .... | location scout (2 episodes, 1999-2002) |
| Kristen Boulé | .... | key set production assistant (2 episodes, 2007) |
| Joey Cabrera | .... | stand-in (2 episodes, 2008) |
| Juli Marialani Johnston | .... | production assistant (2 episodes, 2008) |
| Chad Tyler | .... | stand-in (2 episodes, 2008) |
|
| Darren Preston Lane | .... | production assistant (unknown episodes, 1990) |
| Monty Simons | .... | segment producer (unknown episodes, 1999) |
| Patrick A. Younan | .... | production assistant (unknown episodes, 1999) |
| Heidi C. Bordogna | .... | first assistant craft service (unknown episodes) |
| Alex Brandenburg | .... | production assistant (unknown episodes) |
| Patrick Burn | .... | location manager (unknown episodes) |
| Joe Cacciotti | .... | key set production assistant (unknown episodes) |
| Amy Carrick | .... | production assistant (unknown episodes) |
| Jon Coniglio | .... | production assistant (unknown episodes) |
| Tom Cornelius | .... | craft service (unknown episodes) |
| Bill Davis | .... | technical advisor: police (unknown episodes) |
| Payton Dunham | .... | key set production assistant / location scout (unknown episodes) |
| Gilbert Felix | .... | production assistant (unknown episodes) |
| Robb Foglia | .... | production assistant (unknown episodes) |
| Lowell Freedman | .... | key production assistant (unknown episodes) |
| Nan Garcia-Wood | .... | script supervisor (unknown episodes) |
| Chuck Gramling | .... | production assistant (unknown episodes) |
| Jeanette Guaman | .... | production assistant (unknown episodes) |
| Claudia J. Hill | .... | horse wrangler (unknown episodes) |
| Jeffrey A. Keith | .... | travel coordinator (unknown episodes) |
| Denise Loren | .... | production assistant (unknown episodes) |
| Roger M. Mayer | .... | production assistant (unknown episodes) |
| Javier Mayol | .... | production assistant (unknown episodes) |
| Kate Miller | .... | location scout (unknown episodes) |
| Bernice Moschini | .... | production accountant (unknown episodes) |
| Scott Robertson Price | .... | coordinator: Utah (unknown episodes) |
| Carl Pugliese | .... | production assistant (unknown episodes) |
| Michael Sandknop | .... | location scout (unknown episodes) |
| Jeffrey Shepherd | .... | location scout (unknown episodes) |
| Herb Silverman | .... | production coordinator (unknown episodes) |
| Dave Thomas | .... | audio producer (unknown episodes) |
| Katherine Torpey | .... | production assistant (unknown episodes) |
| Troy Waters | .... | marine coordinator (unknown episodes) |
| Charlie Weyman | .... | production coordinator (unknown episodes) |
| Cannon L. Young Jr. | .... | production assistant (unknown episodes) |
| |