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ABOUT

Consulting with Purpose

Homicide Expert Witness | Police Practices Expert | Criminal Investigation Consultant

Retain a Proven Homicide Expert Witness with over 46 Years of Law Enforcement Experience.

 

Dr. Nelson Andreu is a nationally retained homicide expert witness and law enforcement consultant with over 46 years of experience in criminal investigations. A veteran of the Miami Police Department, he served more than 20 years in the Homicide Unit, handling complex and high-profile cases involving violent crime, investigative procedures, and case strategy.

Dr. Andreu provides expert witness services in homicide cases, including case review, expert reports, deposition testimony, and trial testimony for both plaintiff and defense attorneys.

 

Expert Witness Services for Homicide & Criminal Investigations.

Dr. Andreu is retained in cases involving:

  • Homicide investigations and procedures

  • Police practices and law enforcement standards

  • Wrongful conviction claims

  • False or coerced confessions

  • Failure to investigate / investigative negligence

  • Interview and interrogation techniques

  • Investigative misconduct and procedural violations

  • Use of force and officer-involved incidents

As a criminal investigation expert witness, he provides clear, defensible opinions based on established law enforcement standards and decades of real-world experience.

 

Comprehensive Case Analysis & Courtroom-Ready Opinions

Dr. Andreu delivers:

  • Detailed case reviews and expert consultation

  • Thorough expert reports and rebuttal analysis

  • Deposition and trial testimony

  • Strategic insight into case development and investigative decision-making

His work is designed to withstand scrutiny in Daubert challenges, cross-examination, and trial proceedings.

 

Police Practices & Investigative Standards Expert

With extensive experience in homicide investigations and police procedures, Dr. Andreu evaluates whether investigators adhered to accepted standards, including:

  • Proper crime scene handling and evidence evaluation

  • Sound interview and interrogation practices

  • Avoidance of tunnel vision and confirmation bias

  • Compliance with established investigative protocols

He is frequently retained as a police practices expert witness in both criminal and civil litigation.

 

Security Consulting & Risk Assessment Services

In addition to litigation support, Dr. Andreu provides security consulting services, including:

  • Physical site security assessments

  • Identification of security vulnerabilities and risks

  • Recommendations for security improvements and enhancements

  • Development of effective security procedures and protocols

 

Why Attorneys Retain Dr. Nelson Andreu

  • Over 46 years of law enforcement experience

  • More than 20 years in homicide investigations with the Miami Police Dept.

  • Recognized homicide expert witness and police practices expert

  • Real-world investigative expertise—not theoretical analysis

  • Clear, credible, and authoritative communication

 

Homicide Expert Witness – Nationwide

Based in Florida, Dr. Andreu is available as a homicide expert witness in Miami, South Florida, and worldwide. He works with attorneys on complex, high-stakes cases requiring credible, experienced analysis.

 

Contact for Expert Witness Consultation

Retain a trusted homicide expert witness today.

Our Past & Current Clients

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