David MacNeil
FORENSIC CONSULTANT & CRIME SCENE INVESTIGATION EXPERT
David M. MacNeil (Dave) brings over 37 years of distinguished service from the Watertown Police Department, where he served as detective, forensic photographer, and administrator of the Crime Laboratory. During his career, he led complex forensic operations, processed major crime scenes, and played a critical role in nationally significant cases—including the Boston Marathon bombing—cementing his reputation as a trusted expert in crime scene management and investigative best practices.
Following his retirement, Dave founded MacNeil Investigations & Forensic Consulting, providing advanced forensic services and specialized training to law enforcement agencies, legal teams, and private investigators across the country. As a respected instructor at institutions like Boston University, Sirchie, the National Forensic Academy, and NEMLEC, and in his role as Cold Case Initiative Vice President and Law Enforcement Liaison for Innovative Forensic Investigations, he continues to focus on hands-on training, cold case review, and integrating cutting-edge forensic techniques into modern investigative work.
Your Guide in These Specialized Courses
Led by our seasoned investigative professionals, these courses combine proven field techniques with practical insights to help you excel in every stage of your investigative career.
Learn the step-by-step protocols law enforcement professionals use to secure, process, and document a crime scene. This course covers initial response procedures, scene preservation, evidence identification, photography, sketching, chain of custody, and proper evidence packaging. You’ll gain insight into how officers and investigators collaborate at the scene, ensuring that all physical evidence is handled in compliance with legal and forensic standards. Through real-world scenarios and best practices, you’ll develop the skills to maintain scene integrity, avoid contamination, and prepare evidence for courtroom presentation.
Learn the step-by-step protocols law enforcement professionals use to secure, process, and document a crime scene. This course covers initial response procedures, scene preservation, evidence identification, photography, sketching, chain of custody, and proper evidence packaging. You’ll gain insight into how officers and investigators collaborate at the scene, ensuring that all physical evidence is handled in compliance with legal and forensic standards. Through real-world scenarios and best practices, you’ll develop the skills to maintain scene integrity, avoid contamination, and prepare evidence for courtroom presentation.
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