Unsolved Crime & Cold Cases

Our private investigators assist clients by helping them fill in the details surrounding a case to shed new light on the situation.

Unsolved Crime

In unsolved crime cases, our private investigators assist clients by helping them fill in the details surrounding a case to shed new light on the situation. In the past, our investigators have been brought in on many high-profile murder, kidnapping, rape, stalker and other felony crime investigations.

With expertise that can only come from decades of service and expert training as former Federal agents, Martin Investigative Services can provide unique insights to help bring resolution to unsolved crimes. We can help uncover new leads, review existing work by local authorities, and develop new theories in an effort to uncover the truth.  Put our expertise to work for you, today

Our investigators have a great deal of experience in the following areas:

    Martin Investigative Services
  • Developing new theories
  • Identifying new leads
  • Substantiating the sequence of events
  • Interviewing witnesses
  • Interacting with local authorities
  • Crime scene investigation
  • Forensic analysis
  • Video forensics
  • Audio forensics

While the odds of successful resolution decrease as time passes, many times a fresh perspective on a cold case will lead in new directions that will contribute to an increase in understanding or eventual resolution.

With over 40 years of experience, Martin Investigative comprised of professionals from all areas of law enforcement and investigation. We’ll meet with you at the location of your choice and your services will be kept in our confidence only.


National investigation services, California offices

Martin Investigative Services offers full-service investigation for corporations, businesses, celebrities, and other individuals across the United States and abroad. We are headquartered in Orange County, California, with offices in Newport Beach and Mission Viejo. We also have offices in Los Angeles and San Diego. Read more about Martin Investigative Services.


  • Surveillance: Marital, Workers Comp, Insurance
  • Unsolved Crime and Cold Cases
  • Asset and Background Information Searches
  • Locating Friends and Family
California Private Investigator > Orange County Private Investigator :
Newport Beach Private Investigator: 620 Newport Center Drive, Suite 1030, Newport CA 92660 • Google MapYahoo Map
Mission Viejo Private Investigator: 25909 Pala, Suite 300, Mission Viejo CA 92691 • Google MapYahoo Map

Other office locations:
Los Angeles Private Investigator: 1880 Century Park East, Suite 618, Los Angeles CA 90067 • Google MapYahoo Map
San Diego Private Investigator: 4370 La Jolla Village Drive, Suite 400, San Diego CA 92122-1249 • Google MapYahoo Map