Criminal Investigations Expert Witnesses

Criminal investigations expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on criminal investigations. The criminal investigations expert witness listings on this page are typically from fields/areas of expertise such as: Law Enf & Criminal Justice, Police Practices & Procedures, and Security.

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James (Jim) McMahon, CPP, CISSP

Physical/Info Sys Security Expert/Law Enforcement

McMahon & Associates

California
Security, Law Enf & Criminal Justice - Intellectual Property protection, Physical /Personal/ Information/Network Security, Criminal Investigations, POLICE, CCTV, Computer Forensics, evidence collection, Standard of Care, Training, Fraud, Premises liability, Use of Force, premise security, truth, Information Systems Security, Expert Witness, de-escalation, tracking
Director Certified, Leadership Fellow NACD / Law Enforcement Exec. Multiple professional certifications. Expert Witness Pre-case consultant Accomplished professional with comprehensive international investigative skills, information security, and regulatory compliance background and success in achieving and exceeding organizational goals and objectives. Set goals, priorities, manage resources and develop safety plans. Accepted in state and federal courts as an expert witness. Wide spread work in risk management, premises liability, duty of care, production, manufacturing, customer safety, executive protection global travel, employee training, fraud investigations, pre-employment background, drug testing, innovative regulatory compliance and loss prevention activities within local, state and federal guidelines. Frequent corporate advisor. Significant international experience and operations. Successful multiple international projects. Research & evaluate industry trends, using...
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Tony Turnbull

Police Practices Expert-Nationwide

Turnbull Consulting

Cameron Park, California
Police Practices & Procedures, Law Enf & Criminal Justice - Civil Rights, Interrogations, Police Practices, Search & Seizure, Laws of Arrest, Wrongful Conviction, False Arrest, Officer Involved Shootings, Homicide, Crime Scenes, In-Custody Deaths, Criminal Investigations, Jails & Prisons, Admin Investigations, Cell Phone Analysis, Probable Cause, Violent Crimes, Cold Case, Jails, Prisons
I am a retired Sergeant with the Sacramento County Sheriff's Office. I have over 30 years of law enforcement experience. I am a Police Practices Expert with a wide range of expertise, including but not limited to, 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. I provide consulting and expert witness services specializing in extensive and in-depth case reviews, analysis, and independent and objective opinion development for thorough Rule 26 reports and testimony. I am an instructor with California POST Robert Presley's Institute of Criminal Investigations including Investigators Core, Homicide Investigations, Officer Involved Shooting ...
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John D. Dale

Pembroke Pines, Florida
Law Enf & Criminal Justice, Police Practices & Procedures - Use of Force, Criminal Investigations, Police Misconduct, Internal Affairs, Employee Investigations, Civil Rights Violations, Excessive Force, Police Tactics, Officer Involved Shootings, Mass Shootings, School Security, Vehicle Pursuits, Police Policy, Arrests, Police Training
A subject matter expert in police practices and procedures since 2019. Retained in federal and state courts as part of criminal and civil proceedings to provide analysis for cases involving the use of force, policy, training, and police management practices. Served as an external force investigator to conduct force reviews as part of a Department of Justice consent decree. Force reviews have been conducted for officer-involved shootings, tactical activations, less-lethal munitions, Conductive Energy Weapons, chemical munitions/agents, impact weapons, and physical control. A law enforcement professional since 1989 with experience currently as an Assistant Chief of Police (South Florida), and formerly a Colonel (Broward Sheriff's Office), and a Captain, Sergeant, Detective, and Officer (Fort Lauderdale Police Department). Experienced in the management of Patrol Operations, Investigations (Criminal, Strategic), and Professional Standards (Internal Affairs, Public Corruption, Training,...
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James (Jim) McMahon, CPP, CISSP

Physical/Info Sys Security Expert/Law Enforcement

McMahon & Associates

Eagle, Idaho
Security, Law Enf & Criminal Justice - Intellectual Property protection, Physical /Personal/ Information/Network Security, Criminal Investigations, POLICE, CCTV, Computer Forensics, evidence collection, Standard of Care, Training, Fraud, Premises liability, Use of Force, premise security, truth, Information Systems Security, Expert Witness, de-escalation, tracking
Director Certified, Leadership Fellow NACD / Law Enforcement Exec. Multiple professional certifications. Expert Witness Pre-case consultant Accomplished professional with comprehensive international investigative skills, information security, and regulatory compliance background and success in achieving and exceeding organizational goals and objectives. Set goals, priorities, manage resources and develop safety plans. Accepted in state and federal courts as an expert witness. Wide spread work in risk management, premises liability, duty of care, production, manufacturing, customer safety, executive protection global travel, employee training, fraud investigations, pre-employment background, drug testing, innovative regulatory compliance and loss prevention activities within local, state and federal guidelines. Frequent corporate advisor. Significant international experience and operations. Successful multiple international projects. Research & evaluate industry trends, using...