Private Investigator in Duarte, CA — Surveillance Is Our Specialty
Looking for a private investigator in Duarte? Bear Witness Private Investigators is a California-licensed firm (PI #18755) that has specialized in surveillance since 1996. Duarte is a city of about 22,000 people in Los Angeles County, and it is part of our regular coverage across Southern California.
From infidelity and custody cases to workers’ compensation fraud and litigation support, we keep our caseload small so every Duarte client works directly with the investigator in the field — and gets a clear answer, documented to the standard California courts expect.
Duarte Surveillance Investigations: Our Specialty
Most investigations come down to one question: what is really happening? A private investigator in Duarte answers it with surveillance video, photos, and a written timeline.
Mobile Surveillance
Experienced drivers who anticipate turns and freeway exits, so your subject is documented from stop to stop.
Static Surveillance
We hold position at the locations that matter to your case and record activity with time-stamped video.
Two-Investigator Teams
For careful or unpredictable subjects, two investigators trade off so the same car is never seen twice.
Like much of Los Angeles County, Duarte mixes residential neighborhoods with busy commercial corridors. We combine discreet residential positioning with mobile coverage on the roads in between.
How a Duarte Private Investigator Can Help
Four kinds of clients call us most — and surveillance is at the center of almost every case.
Personal Cases
- Runaways & missing persons — people-location work to find someone who has gone missing or run away.
- Infidelity & cheating spouse — discreet surveillance that gives you a clear answer, either way.
- Nanny & daycare surveillance — observing caregiver conduct and advising on what in-home recording is legal.
Family Law Cases
- Child support — documenting employment and income the other parent may not be reporting.
- Divorce investigations — facts and evidence your family law attorney can use.
- Cohabitation — evidence of a supported spouse living with a partner, relevant to support.
- Lifestyle investigations — showing how someone actually lives when income or need is in dispute.
- Child visitation — documenting visitation exchanges and compliance with the court order.
- Child custody — facts that help a court decide what is best for your child.
Business Cases
- Employee theft — quietly confirming suspected theft so you can respond with facts.
- Workers’ comp fraud — surveillance on claims where activity and injuries don’t match.
- Insurance defense — surveillance and investigation for carriers and defense counsel.
- Business partner surveillance — answers before you sign or after trust breaks down.
- Injury claims — documenting physical activity relevant to personal injury claims.
Law Firm Cases
- Court testimony — our investigators testify to what they observed.
- Witness statements — tracking down witnesses in Duarte and beyond.
- Evasive subpoena service — skip-tracing and service for hard-to-serve subjects.
- Evidence gathering — court-ready documentation for litigation.
- Surveillance — time-stamped video and investigator reports for your case.
- Records research — court, property, business, and public records research.
What Sets Our Duarte Investigators Apart
Not every Duarte private investigator specializes in surveillance. Here is what makes Bear Witness different.
Available 24/7
Cases don’t keep business hours. We take calls and work surveillance day, night, and weekends.
Direct Access to Your Investigator
One investigator from your first call to your final report, with updates along the way.
Court-Ready Evidence
Time-stamped video, detailed reports, and investigator testimony that stand up in court.
Statewide Coverage
From Duarte to the rest of California, we follow subjects wherever the case leads.
Honest Results
We report what we observed — no stretching thin evidence to justify a case.
Surveillance Specialists
Surveillance has been our focus since 1996. It is not a side service — it is what we do best.
What Our Clients Say
Real reviews from Bear Witness clients across California.
“Thank you for all your help. You guys were really great! I will definitely refer your private detective agency to all my friends & colleagues in need.”
“Of all the private investigators I have used, the Bear Witness Detective Agency has proven to be the only investigation company I can completely rely on and trust. When I need smart surveillance investigators who get the job done right, they are always at the very top of my call list.”
“Excellent communication, insight, and follow-through skills. Very impressed with your surveillance video. Excellent work. Thank you! Will refer to friends in need.”
Names and/or locations altered for client privacy. Read more client reviews →
Where Duarte Cases Are Heard
Duarte sits roughly 28 miles from Los Angeles, the Los Angeles County seat, where the main Superior Court of California, County of Los Angeles facilities are located.
If your Duarte matter ends up in the Superior Court of California, County of Los Angeles, documentation quality decides whether the evidence helps. We keep chain-of-custody records and write reports in plain chronological order.
Also Serving Near Duarte
If your subject lives in Duarte but works or travels elsewhere, that’s routine. Nearby areas include:
Straight-line distances from Duarte.
How Hiring a Private Investigator in Duarte Works
- 1
Free Consultation
Tell a licensed investigator what you know and what you need confirmed. Completely confidential.
- 2
Plan & Estimate
We build a plan around your subject’s routine in Duarte and give you a written estimate before any work begins.
- 3
Surveillance
Your investigator documents activity with time-stamped video and keeps you updated.
- 4
Report & Evidence
You receive a clear written report, photos, and video — plus testimony if needed.
Questions About Hiring a Private Investigator in Duarte
Do you also cover Monrovia and Azusa?
Yes. Monrovia is about 2 miles from Duarte and Azusa about 3 miles, and both are part of our regular coverage in Southern California.
What does a private investigator in Duarte do?
We document facts for personal, family law, business, and legal cases — most often through surveillance, along with background research, people location, witness statements, and process serving.
Do you specialize in surveillance?
Yes. Surveillance has been Bear Witness’s specialty since 1996, and it is part of nearly every case we handle in Duarte and across California.
Do you handle workers’ compensation and insurance claims?
Yes. We conduct claimant surveillance and claim investigations for employers, insurers, and defense counsel.
Can you serve someone who is avoiding service?
Yes. We locate the person first, then time service attempts around when they are actually there, and document service for the court.
Can you catch a cheating spouse in Duarte?
We can document what your spouse actually does and who they meet, with time-stamped video and a written report, and give you a clear answer either way.
How quickly can a Duarte case start?
Most cases begin within a day or two of your first call, once we agree on a plan.
Can you help find a runaway or missing person?
Yes. We use people-location and investigative techniques to find family members and others who have left or lost touch.
How do I verify your license?
Look up PI License #18755 on the California Department of Consumer Affairs license search.
Ready to talk to a private investigator in Duarte? Call 1(877)PROOF-24/7 for a free, confidential consultation.