28 years of experience

Michael Mastrangelo began his investigative career in 1997, bringing determination, discipline, and a deep commitment to uncovering the truth to every case he touched. In 2003, he founded Master Private Investigation Agency, building it into a respected, full-service investigative firm known for its precision, professionalism, and unwavering dedication to its clients.

With more than two decades of experience, Michael is a Board-Certified Criminal Defense Investigator who has handled a wide range of complex and high-stakes cases. His extensive background includes missing person cases, domestic and infidelity investigations, insurance fraud and workers’ compensation cases, homicide and violent crime investigations, and numerous assignments requiring advanced surveillance, digital intelligence, and strategic case planning. His work has supported law firms, families, insurance companies, and corporations seeking credible answers and actionable evidence.

Today, Michael leads a team of highly trained, state-licensed investigators who share his commitment to accuracy, integrity, and confidentiality. Each investigator brings specialized expertise—from covert surveillance and OSINT research to background analysis and legal case support—ensuring that every assignment receives a customized, methodical approach.

At Master Private Investigation Agency, every case is handled with strict confidentiality and meticulous attention to detail. The agency follows industry best practices, adheres to state and federal laws, and maintains the highest ethical standards. Whether conducting long-term surveillance, performing deep background investigations, uncovering fraud, locating missing individuals, or supporting criminal defense teams, the goal is always the same: deliver clear, verifiable, court-ready evidence.

Clients rely on the agency for its transparency, strategic thinking, and time-tested investigative methods. Every investigation is tailored to the unique needs of the client, with regular updates, detailed reporting, and a dedication to uncovering the facts—no matter how complex the situation may be.

For individuals, attorneys, corporations, and insurance providers seeking trustworthy, results-driven investigative services, Master Private Investigation Agency offers the expertise, discretion, and professionalism necessary to handle the case with the seriousness it deserves.