Difficult Service of Process Slowing Your Case?

California Plaintiff Employee Investigation & Support Services

Are you having trouble serving papers on individuals or businesses? Tristar Investigation specializes in difficult service of process and completes these projects promptly and efficiently.

When your usual process server runs into a brick wall, our team can help you break through to get your case back on track.

Want to know more about how this service works?
Schedule a quick consult with our CEO.

ENDORSED BY: Matern Law Group | Moon Law Group | Panish, Shea, Boyle & Ravipudi

Our Difficult Service of Process Services

Tristar Investigation specializes in difficult service of process. Our team has supported hundreds of California law firms across thousands of cases and has developed sophisticated protocols to produce highly accurate (and fast) results.

Our team will …

1) Conduct a locate investigation on the defendant or subject to determine their current address and possible work addresses.
2) Research and identify vehicles associated with your subject to help us verify their address and assist with conducting a stakeout.
3) Identify work and social activities the subject may be involved in via our advanced social media intelligence-gathering tactics.

4) Execute service anywhere in the State of California.
5) If they are not home, we will speak to their neighbors and landlords. We’ll run vehicle plates to uncover any additional associates.
6) If the service of process is particularly challenging, we’ll conduct stakeouts, and serve the subject going to or from the known locations.

Tristar Investigation’s 30+ years of expertise has been featured by:

The History Channel Logo
CNN News Logo

Our OTHER Litigation Support Services

Overwhelmed staff? Major case deadline looming?
Want to accelerate your outreach & research? Need to beef up your case with more witnesses?


Do you need more information, such as legal entity status, on a defendant business or individual?

Missing Plaintiff

Is your plaintiff or class action representative missing, or non-responsive?

PAGA Investigation Services

Bilingual Investigation & Outreach Team
Experience with over 600 PAGA Cases
Staffed for 100% Coverage in CA


“Bruce and the team at Tristar have been wonderful to work with. Beyond their professionalism, they produce excellent results, are prompt to respond, and are transparent and thorough in their communications with us. We truly value our working relationship together!”

Matthew J. Matern, Esq.


“We value our relationship with Bruce Robertson and the Tristar Investigation team.  They are responsive and keep us informed throughout their process.  We can always count on them to deliver excellent results.”

Kane Moon, Esq.


“Bruce Robertson and Tristar Investigation not only know how to get information, but they understand why the information they are getting is important. This makes them exceedingly efficient and effective.”

Kevin Boyle, Esq.


Our Services are a Standard Recoverable Cost

As a licensed investigation agency working on your case, our fees for these services are case costs that generally qualify for reimbursement when the case settles.

The average cost for these difficult service projects can run anywhere from $450 to $1,200, depending on the level of difficulty.