Tony Turnbull

Tony Turnbull

Turnbull Consulting
3450 Palmer Drive Suite 4-174
Cameron Park, CA 95682
Office: 916-293-1246

I am a retired Sergeant with the Sacramento County Sheriff's Office. I have over 30 years of law enforcement experience. I'm currently providing consulting and expert witness services, instructor with Robert Presley's Institute of Criminal Investigations, and working cold case homicide investigations as a retired annuitant at the Sacramento County Sheriff's Office. My areas of expertise are: Criminal Investigation Analysis, Police Practices & Procedures, Officer Involved Shooting Investigations, Crime Scene Management, Interview & Interrogation Techniques, 4th Amendment Issues including Search & Arrest Warrants, Probable Cause Analysis, & Wrongful Arrest/Conviction Analysis.

I have a wide range experience and expertise. Major Crime Scene Management, Homicide Investigations, Criminal Investigative Practices, Cellular Phone Forensic Analysis, Officer Involved Shooting Investigations, In-Custody Deaths, Interview & Interrogation Techniques (both Reid and Science Based), and other in-depth investigations, including Conspiracy, Robbery, Missing Persons, Kidnapping, Murder for Hire, Gang Related Crimes, and Narcotics charges. I spent 20 years of my career in Investigations including 6 years in Gangs & Narcotics and 14 years in the Homicide Bureau, including 3 years as the Homicide Bureau Supervisor.

**I can travel domestically and internationally if the case requires it.

Areas of Expertise
  • Criminalistics
  • Evidence Analysis & Preservation
  • Gangs
  • Jails & Prisons
  • Law Enforcement
  • Police Procedures
  • RICO/Racketeering
  • Surveillance
  • Violent Crimes

Expert Background
Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
A: California State University, Sacramento, B.A. Ethnic Studies
California POST Certificates Basic, Intermediate, Advanced, Supervisor
Q: Please list your affiliations or memberships in any professional and/or industry organizations:
A: California Homicide Investigators Association (CHIA)
International Homicide Investigators Association (IHIA)
California Narcotics Officers Association (CNOA)
California Gang Investigators Association (CGIA)
California Association of Hostage Negotiators (CAHN)
Peace Officers Research Association of California (PORAC)
Q: Please list any teaching or speaking experience you have had, including subject matter:
A: Robert Presley Institute of Criminal Investigations-Core Investigations
--Interview & Interrogation
--Cognitive Interview Techniques
--Case Management

Robert Presley Institute of Criminal Investigations-Officer Involved Shooting Investigations
--Crime Scene Processing
--Officer Interviews
--Administrative Interviews & Investigations
--Video Seizures
--In-Custody Deaths

Robert Presley Institute of Criminal Investigations-Basic Homicide Investigations
--Interaction with Victim's Family
--Homicide Interview & Interrogation
--Crime Scene Processing & Evidence
--Officer Involved Shooting Case Studies

Robert Presley Institute of Criminal Investigations-Science Based Interviewing
--Cognitive Interviews
--Observing Rapport Based Interpersonal Techniques
--Strategic Use of Evidence

International Homicide Investigators Association-Basic Homicide
--Investigative Resources
--Suspect Development
--Homicide Mindset

I was also the Public Information Officer (PIO) for the Sacramento County Sheriff's Office from 2016-2018
Q: Have any of your accreditations ever been investigated, suspended or removed? (if yes, explain)
A: No
Q: For what area(s) of expertise have you been retained as an expert?
A: Interview & Interrogation Techniques
Malicious Prosecution
Officer Involved Shooting-Crime Scene Analysis
Police Practices
Criminal Investigative Procedures
Search & Arrest Warrant Analysis
Wrongful Conviction
Wrongful Arrest (4th Amendment)
Exculpatory Evidence
Homicide Investigations
Cellular Phone Analysis
Q: When was the last time you had your deposition taken?
A: March 2024
Q: On how many occasions have you been qualified by a court to give expert testimony?
A: I can discuss with potential clients
Q: For how many years have you worked with the legal industry as an expert?
A: 10+
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: Consulting, Expert Opinion, Expert Review & Reports, Rule 26 Reports, Rebuttal Reports, Site Inspections, Criminal, Civil & Policy Review, Investigations, Depositions & Testimony, Support for Counsel during deposstions
Q: What is your hourly rate to consult with an attorney?
A: Initial consultation is at no charge. Fee schedule can be discussed with potential client.
Q: What is your hourly rate to review documents?
A: $275
Q: What is your hourly rate to provide deposition testimony?
A: $350 (4 hour minimum)
Q: What is your hourly rate to provide testimony at trial?
A: $350 (4 hour minimum)
Q: Please list any fees other than those stated above (E.g.: travel expenses, copy fees, etc.)
A: Site visit is $300/hr (3 hour minimum) Travel is $100/hr--point to point. Mileage charged at the current IRS rate. Airfare booked at an unrestricted coach fare. Parking/tolls, rental care/commercial ground transportation charged to client.


Available Upon Request