Los Angeles private investigator Tristar Investigation is a full-service detective agency helping clients worldwide with investigative needs in California and throughout the U.S. For over 30 years we have served the legal, insurance and business communities, as well as private parties.

We’re a member of the National Association of Legal Investigators, the California Association of Licensed Investigators and the National Council of Investigation and Security Services.

Our investigators are well trained seasoned professionals averaging six years experience. Many are ex-law enforcement. They have the experience, resources and professional pride that guarantees the best possible outcome for your investigation.

Our founder, Bruce Robertson, has become an established leader in the profession, earning the respect of experts and journalists worldwide. He has been a featured lecturer on investigative matters for the California Consumer Attorneys Association Continuing Education seminars series. He is often called upon to lend expertise and insight to current events. He has appeared on numerous Los Angeles area TV and radio programs, network television such as CNN, MSNBC, CNBC. He has been quoted in print publications ranging from U.S. News & World Report to George magazine and Ladies Home Journal. Tristar In The News.

Tristar Investigation is a California licensed private investigator headquartered in Los Angeles. Our Business License is #28433. We are bonded and insured for $2,000,000.

What people are saying

Thank you for providing me with such outstanding service. I truly appreciate you and your staff for all you’ve done for me and my family…. I’m totally pleased with the outcome and their findings… Great job!

Gerome S. | Retired | USA

I have used Tristar for years. Their response time and results are unparalleled. They get my highest praise.

Robert Clayton, Attorney | Taylor & Ring, LLP | Los Angeles, CA

Tristar found my birth mothers records the same day. I am very impressed with their professionalism and the services they provide. I will use them again for any of my needs.

Dr. Claudia Barne | Professor | 23 years

Tristar was very helpful in my address search. Kellie Anguiano was very personable and kept me up to date with the search process… Thank you so much for your help!

Emily | DDS Student | 2 years | Los Angeles, CA

Tristar is by far the most reliable and efficient investigator we have ever used.

Nicole Young | Attorney, 14 years | Woodland Hills, CA

Tristar in the news

Tristar Investigation has been featured in a dozens of publications, everything from print to TV and radio. Bellow you will find Burce Robertson interviewed and discussed on famous publications such as the History Channel, New York Times, CNN and a lot more.