Private Investigator in Pasadena, CA — Surveillance Is Our Specialty
Looking for a private investigator in Pasadena? Bear Witness Private Investigators is a California-licensed firm (PI #18755) that has specialized in surveillance since 1996. Pasadena is a city of about 136,000 people in Los Angeles County, and it is part of our regular coverage across Southern California.
Our Pasadena clients include individuals facing infidelity or a missing family member, parents in custody and support disputes, employers and insurers dealing with fraud, and law firms that need evidence and testimony. What they share is a need for discreet, lawful surveillance that holds up.
Pasadena Surveillance Investigations: Our Specialty
As a Pasadena private investigator, surveillance is the core of what we do. We document activity legally, discreetly, and in a way that holds up in court.
Mobile Surveillance
We follow the subject by vehicle through Pasadena and beyond, keeping distance and cover so they never know we are there.
Static Surveillance
We hold position at the locations that matter to your case and record activity with time-stamped video.
Two-Investigator Teams
Team surveillance covers multiple exits and keeps a moving subject in sight in heavy Southern California traffic.
Every Pasadena surveillance plan is built around where your subject actually lives, works, and spends time — not a generic template.
Cases Our Pasadena Private Investigators Take On
Whatever the situation, the work comes down to documenting the facts lawfully and clearly.
Personal Cases
- Runaways & missing persons — people-location work to find someone who has gone missing or run away.
- Nanny & daycare surveillance — observing caregiver conduct and advising on what in-home recording is legal.
- Infidelity & cheating spouse — discreet surveillance that gives you a clear answer, either way.
Family Law Cases
- Child visitation — observing whether visitation terms are being followed.
- Lifestyle investigations — documenting spending, activities, and lifestyle relevant to support claims.
- Child support — documenting employment and income the other parent may not be reporting.
- Cohabitation — proof of a live-in partner when spousal support is at stake.
- Divorce investigations — evidence for Los Angeles County family court, documented properly.
- Child custody — facts that help a court decide what is best for your child.
Business Cases
- Business partner surveillance — due diligence and surveillance on partners and key associates.
- Employee theft — facts for Pasadena employers before they confront anyone.
- Injury claims — showing what a claimant can really do.
- Insurance defense — claim investigations built for insurers and their attorneys.
- Workers’ comp fraud — comparing a claimant’s real activity to reported restrictions.
Law Firm Cases
- Evasive subpoena service — serving witnesses and parties who are avoiding service.
- Evidence gathering — facts collected to evidentiary standards.
- Court testimony — credible testimony from the investigator who did the work.
- Surveillance — defensible surveillance your team can rely on at trial.
- Witness statements — finding and interviewing the people who saw what happened.
- Records research — court, property, business, and public records research.
Why Pasadena Clients Choose Bear Witness
Not every Pasadena private investigator specializes in surveillance. Here is what makes Bear Witness different.
Surveillance Specialists
Surveillance has been our focus since 1996. It is not a side service — it is what we do best.
Available 24/7
Cases don’t keep business hours. We take calls and work surveillance day, night, and weekends.
Court-Ready Evidence
Evidence gathered lawfully and documented the way California judges and attorneys expect.
Direct Access to Your Investigator
We limit our caseload, so you talk to the investigator working your case — not a call center.
Absolute Discretion
Confidential from the first call; covert in the field.
Statewide Coverage
Coverage across Southern, Northern, and Central California, including all of Los Angeles County.
What Our Clients Say
Real reviews from Bear Witness clients across California.
“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.”
“James, thank you for stepping in and helping out our law firm! You came highly recommended to us by a colleague as the go-to-guy for all things surveillance. Good communication skills & excellent work!”
“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.”
Names and/or locations altered for client privacy. Read more client reviews →
Where Pasadena Cases Are Heard
Pasadena sits roughly 18 miles from Los Angeles, the Los Angeles County seat, where the main Superior Court of California, County of Los Angeles facilities are located.
Divorce, custody, support, and civil cases involving Pasadena residents are generally filed in the Superior Court of California, County of Los Angeles. We document every case with that courtroom in mind: dated, time-stamped, gathered legally, and backed by testimony if needed.
About 58% of Pasadena households rent, and renters move more often — so for process serving and people-location work, we verify a subject’s current address before the first attempt.
Also Serving Near Pasadena
Cases rarely stay inside one city limit. From Pasadena, we regularly work:
Straight-line distances from Pasadena.
Working With a Pasadena Private Investigator, Step by Step
- 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 Pasadena 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 Pasadena
Do you also cover Altadena and San Marino?
Yes. Altadena is about 2 miles from Pasadena and San Marino about 3 miles, and both are part of our regular coverage in Southern California.
What does a private investigator in Pasadena 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 Pasadena and across California.
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 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.
Can you catch a cheating spouse in Pasadena?
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.
Do you work with Los Angeles County attorneys?
Yes. Law firms use us for evidence gathering, surveillance, witness statements, records research, evasive subpoena service, and court testimony.
How is a Pasadena investigation priced?
Surveillance is billed by time. After a free consultation, you get a written estimate before any billable work begins.
What if the investigation finds nothing?
You get an honest report that says so. A clean result still answers the question.
Ready to talk to a private investigator in Pasadena? Call 1(877)PROOF-24/7 for a free, confidential consultation.