Self - Narrator / Narrator (19 episodes, 2008-2010)
Detective / Detective Deniman / Donald Blom / Lt. Bellizzi (4 episodes, 2010)
Don May's Son- / The Murderer / The Sheriff (3 episodes, 2010)
Self - CSI, Town of Newburgh Police (2 episodes, 2010)
Self - Detective, Town of Newburgh Police / Self - Lead Detective, Town of Newburgh Police (2 episodes, 2010)
J.C. Lee / Richard Dooley (2 episodes, 2008-2009)
Detective Pellicci / Detective Rogen (2 episodes, 2010)
Self - homicide detective (1 episode, 2008)
Self - New Hampshire Assistant Attorney General (1 episode, 2008)
Detective Scott (1 episode, 2008)
Self - Detective, Metropolitan Police Department, Arson & Explosives (1 episode, 2010)
Self - Detective, Durham County, N.C. (1 episode, 2010)
Self - Multnomah Co. Sheriff's Office (1 episode, 2010)
Self - Lawyer (1 episode, 2010)
Self - Sergeant Investigator, Texas Ranger (1 episode, 2010)
Self - Detective, Hazel Park PD (1 episode, 2010)
Self - Chief, Arkansas City PD (1 episode, 2010)
Self - Mary Stetson's daughter (1 episode, 2008)
Self - Sheriff, Madison Co., Ohio (1 episode, 2010)
Self - Victim's Daughter (1 episode, 2010)
Self - Joel's Father (1 episode, 2010)
Self - Jodi's Mother (1 episode, 2010)
Self - Lieutenant, Madison Police Department (1 episode, 2010)
Self - Prosecuting Attorney, Madison Co., Ohio (1 episode, 2010)
Self - Leann's Friend (1 episode, 2010)
Self - Detective, New Hanover County (1 episode, 2010)
Himselt - Lt. Colonel, Prince George's County Fire Department (1 episode, 2010)
Self - Sheriff, Young County (1 episode, 2010)
Self - Kimberly's Father (1 episode, 2010)
Self - criminologist (1 episode, 2008)
Self - Jodi's Sister (1 episode, 2010)
Self - Sister (1 episode, 2010)
Self - Kimberly's Mother (1 episode, 2010)
Self - Blood Spatter Analyst (1 episode, 2010)
Self - Former Deputy Chief, Young County Sheriff's Office (1 episode, 2010)
Self - Special Agent, ATF (1 episode, 2010)
Self - Detective, Madison Police Department (1 episode, 2010)
Self - Lynne's Brother (1 episode, 2010)
Self - Lead Crime Scene Investigator (1 episode, 2010)
Self - Jodi's Father (1 episode, 2010)
Self - Casey's Mother (1 episode, 2010)
Self - Danny's Mother (1 episode, 2010)
Self - Assistant Commander, Metro Homicide (1 episode, 2010)
Self - Oakland Co. Medical Examiner (1 episode, 2010)
Self - Special Agent, Ohio BCI (1 episode, 2010)
Self - Forensic Scientist, Wisconsin State Crime Lab (1 episode, 2010)
Self - Friend of Logan Young (1 episode, 2008)
Self - Lieutenant, Arkansas City PD (1 episode, 2010)
Self - Pathologist (1 episode, 2010)
Self - Forensic Chemist, ATF (1 episode, 2010)
Self - Investigator, Metro Homicide (1 episode, 2010)
Self - Co-Owner, Brewer Trucking Company (1 episode, 2010)
Self - Supervisor, Firearms, and Tool Marks (1 episode, 2010)
Self - Gresham Police Department (1 episode, 2010)
Self - Forensic Scientist, Ohio BCI (1 episode, 2010)
Self - Assistant Prosecutor (1 episode, 2010)
Self - Special Agent, KBI (1 episode, 2010)
Self - Former Fellow in Forensic Pathology, Dallas Co. Me (1 episode, 2010)
Self - Entomologist (1 episode, 2010)
Self - Suspect (1 episode, 2010)
Self - Forensic Scientist, Oregon State Police Crime Lab (1 episode, 2010)
Self - Daughter of Wayne Shumaker (1 episode, 2010)
Self - Sgt., Warren Co. Sheriff's Office (1 episode, 2010)
Self - Detective, Carbondale Police Department (1 episode, 2010)
Self - DVM & DABVT (1 episode, 2010)
Self - Detective, Kirkland PD (1 episode, 2010)
Self - Chief Deputy, Alexandria VA Fire Department (1 episode, 2010)
Self - CSI, New Hanover County (1 episode, 2010)
Self - Gastroenterologist (1 episode, 2010)
Self - Director, UC Davis Veterinary Genetics Lab (1 episode, 2010)
Self - medical examiner (1 episode, 2008)
Self - Former DNA Analyst, Dallas County (1 episode, 2010)
Self - Former District Attorney, South Bend, IN (1 episode, 2010)
Self - Patrol Officer (1 episode, 2010)
Self - Search and Rescue Tracker (1 episode, 2010)
Self - Detective, Town of Newburgh Police (1 episode, 2010)
Self - Former District Attorney, Palo Pinto County (1 episode, 2010)
Self - Former State Attorney, Jackson County (1 episode, 2010)
Self - Homicide, St. Petersburg Police Department (1 episode, 2010)
Self - Director, Texas EquuSearch (1 episode, 2010)
Self - Dawn's Father (1 episode, 2010)
Self - Cousin (1 episode, 2010)
Self - Investigations Commander, Carbondale Police Department (1 episode, 2010)
Self - Forensic Scientist, KBI (1 episode, 2010)
Self - Dominick's Sister (1 episode, 2010)
Self - Investigator, Humboldt Co. DA Office (1 episode, 2010)
Self - Dawn's Mother (1 episode, 2010)
Self - Forensic Anthropologist (1 episode, 2010)
Self - Lt., Warren Co. Sheriff's Office (1 episode, 2010)
Self - CSI, Town of Newburgh Police (1 episode, 2010)
Self - Water Search and Recovery Specialist (1 episode, 2010)
Self - Forensic Specialist (1 episode, 2010)
Self - Prosecutor (1 episode, 2010)
Self - Mother (1 episode, 2010)
Self - Cowley Co. Attorney (1 episode, 2010)
Self - Forensic Geologist (1 episode, 2010)
Self - DNA Research Coordinator (1 episode, 2010)
Self - Nephew of Cosimo Dibrizzi (1 episode, 2010)
Self - Times Standard (1 episode, 2010)
Self - Cheryl's Brother (1 episode, 2010)
Lewis William Felts (1 episode, 2010)
Self - Supervisor of Forensic Services DNA (1 episode, 2010)
Self - Former Special Agent, FBI (1 episode, 2010)
Self - Chief Investigator, Humboldt Co. DA Office (1 episode, 2010)
Self - President, Necrosearch (1 episode, 2010)
Self - New York State Forensic Scientist (1 episode, 2010)
Self - Assistant District Attorney, Orange County, NY (1 episode, 2010)
Self - Volunteer (1 episode, 2010)
Self - DA, Orange Co. New York (1 episode, 2010)
Self - Assistant State Attorney, Pinellas Co. (1 episode, 2010)
Self - Humboldt Co. Coroner (1 episode, 2010)
Self - Forensic Botanist (1 episode, 2010)
Chief Investigator Hislop (1 episode, 2010)
Football Recruit (1 episode, 2008)
Detective (1 episode, 2008)
Family Matriarch (1 episode, 2008)
Joanie Harper (1 episode, 2008)
Killer (1 episode, 2008)
Kristi Bradley (1 episode, 2008)
Self - Homicide Detective (1 episode, 2008)
Self - Crime Scene Investigator (1 episode, 2008)
Kimberly McDaniel (1 episode, 2009)
Nosie Neighbor (1 episode, 2009)
Janine (1 episode, 2009)
Jill Coit (1 episode, 2009)
Bill Booth (1 episode, 2009)
Conspiring Boyfriend (1 episode, 2009)
Self - Professor, University of Colorado (1 episode, 2009)
Self - Coroner (1 episode, 2009)
Self - Detective (1 episode, 2009)
Detective Booth (1 episode, 2009)
Hannah (1 episode, 2010)
Stephanie (1 episode, 2010)
Crime Scene Forensics-Re-enactment Actor (1 episode, 2010)
Criminal (1 episode, 2010)
Party Guest (1 episode, 2010)
School Principal (1 episode, 2010)
Thomas Sweatt (1 episode, 2010)
Police Officer (1 episode, 2010)
Mother in Reinactment (1 episode, 2010)
Detective (1 episode, 2010)
Danny Pence (1 episode, 2010)
Self - Chief, Moose Lake Police Department (1 episode, 2010)
Self - Odontologist (1 episode, 2010)
Self - Carlton County D.A. (1 episode, 2010)
Self - Richard LeDonne's Mother (1 episode, 2010)
Self - Forensic Facial Reconstructionist (1 episode, 2010)
Detective Frank Molino (1 episode, 2010)
Mr. Thurber (1 episode, 2010)
Self - Criminalist Supervisor (1 episode, 2010)
Self - Iowa Assistant Attorney General (1 episode, 2010)
Self - Katie's Dentist (1 episode, 2010)
Self - Special Agent, Iowa Division of Crimina Investigation (1 episode, 2010)
Self - Former County Attorney, Jackson Co,, Iowa (1 episode, 2010)
Self - NASA Solar Physicist (1 episode, 2010)
Self - Special Agent, Bureau of Criminal Apprehension (1 episode, 2010)
Self - Former Sheriff, Carlton Co. (1 episode, 2010)
Self - Greg May's Son (1 episode, 2010)
Self - Forensic Pathologist (1 episode, 2010)
Self - Greg May's Dentist (1 episode, 2010)
Self - Scientist, Bureau of Criminal Apprehension (1 episode, 2010)
Self - Katie's Brother (1 episode, 2010)
Southern Illinois Detective (1 episode, 2010)
Self - Allegheny Co. Police Department (1 episode, 2010)
Self - Detective Sergeant, Kearney, Missouri Police Department (1 episode, 2010)
Shawn Thompson (1 episode, 2010)
Self - Morris Co. Prosecutor's Office (1 episode, 2010)
Self - Criminalist, Iowa Division of Criminal Investigation (1 episode, 2010)
Self - Victim's Son (1 episode, 2010)
Self - Chief of Police, Bellevue, Iowa (1 episode, 2010)
Michael Fletcher (1 episode, 2010)
Self - Katie's Friend (1 episode, 2010)
Self - Firearms Expert, Allegheny Co. (1 episode, 2010)
Todd Boggess (uncredited) (1 episode, 2010)