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In the meantime, feel free to explore our site to discover what makes us California’s Premier Detective Agency.


What sets Tristar Investigation apart from other California private investigators? Our attention to detail and our commitment to obtaining positive professional results on each case we accept.  This is why we have earned the trust of over 600 law firms in California and across the nation.

We maintain our high standards through our staff of top-notch experienced investigators. Our agents have the experience, resources and pride that guarantees the best possible outcome for your investigation.

Our founder Bruce Robertson is a nationally recognized investigation expert and has been featured in the New York Times, CNN, The History Channel, The Los Angeles Times, Fox News, MSNBC and many other media outlets over the last 30 years.

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