Litigation Support Services
Investigators that take action to substantiate your case or lawsuit with proof.
Our investigative services can be crucial in establishing the facts surrounding a legal case. We provide legal support services in conjunction with your legal representation as a cost-effective means of substantiating your case and increasing your odds of winning.
This strategy is effective for criminal cases, civil suits, divorce proceedings, and child custody. With this much on the line, it's worth a few minutes to call, and we are always happy to provide confidential and free consultations with no-obligation to you.
How our private investigators assist law firms:
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Want to win your case?
Our private investigators are ready to help you discover the proof you need.

Substantiate your case.
Often, these are services that a law firm cannot provide. We work closely with your lawyers to understand their litigation strategy, determine how best to build an effective legal case, and take actions to substantiate your case or lawsuit. Our experienced private investigators are well trained to interview potential witnesses and take their depositions. Our participation in the process can often make the difference between winning and losing a case.
Experience with all types of cases.
We can help you find the right resources, protect your childrens' best interests, and reach amicable settlements in divorce cases. Our consulting services cover every facet of Family Law including paternity actions, child visitation rights, child support payments, alimony, joint custody, and enforcement of judgments.
Experience with all types of law.
We have working relationships with some of the most respected legal firms in Southern California and across the country. We will provide you with information and advice on legal firms that specialize in your area of need, including Criminal Defense, Family Law, Employment Law, Corporate Litigation, and Civil Law. We maintain a list of the best law firms in each specialty based on effectiveness, client satisfaction, and integrity.
Consulting and expert witnesses.
We also offer consulting and expert witness testimony for both criminal and civil trials in matters pertaining to our core competencies of investigation and corporate security. As former Federal agents, our private investigators have a great deal of experience in state and Federal courts and are recognized as highly credible experts in their respective fields.
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Litigation support services we provide for law firms:
We can provide the following services to support your case:
- Surveillance
- Witness interviews
- Anonymous data gathering
- Asset searches
- Public information searches
- Liaison to local authorities
- Depositions
- Background checks
- Expert witness testimony
- Consulting services
Why choose Martin Investigative Services for litigation support services? Here's why:
40+ years experience.
High success rate.
We provide quality investigative services with an unmatched success rate. We provide you with confidence and peace of mind.
Former Federal agents.
Experience & Training.
Our network is composed of private investigators that are former DEA, FBI, IRS, and Secret Service agents.
Free consultation.
No risk.
Our friendly staff can help with your issue, or point you in the right direction. The consult is free and confidential.
Court-admissable.
Evidence that stands up.
Our experienced investigators provide court-admissible evidence that can make all the difference in a trial.
Press: Private Investigation
Adventures in Private Investigating
Newport Beach P.I. Thomas Martin is a man with a calling.
By Sarah Mosqueda
Q&A with Thomas G. Martin
Today's job applicant may be hiding a past of thievery and folly.
By Anne Michaud
Case Study: Private Investigation
Orange County Murder Cold Case
We first met our client through a conference call with the client's family and their attorney, a prominent Orange County attorney.
The client strongly believed that her friend was shot and murdered by her husband. Local police had concluded the case was an accidental shooting.
Results:
After a 9-month investigation, our private investigators gathered enough evidence to prove our client's suspicions were correct. We turned our evidence over to the Orange County District Attorney and the husband was arrested.
Martin Investigative Services has investigated hundreds of cold cases like this one. If you need our help, please contact one of our private investigators us for a free, private consultation.
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See more benefits we offer you. Tap here.



















