CAlifornia private investigators
Finding Answers Through Private
Investigation & Surveillance
We legally obtain evidence and reveal the truth
in a discreet and confidential manner.
Finding answers through private investigation & surveillance
Landmark Investigations specializes in surveillance and background checks. We legally obtain evidence and reveal the truth in a discreet and confidential manner.
Landmark Investigations
Serving California for over 15 Years with Integrity, Determination and Results
Landmark Investigations is comprised of experienced investigative professionals. The firm’s owner, Tom Graybill, is a Licensed Private Investigator, Surveillance Expert, and Certified Fraud Examiner with 15 years of high-level, complex investigation experience. Our core principal is Integrity, and it is demonstrated in all of our work.
We specialize in all types of business and personal fraud and litigation services, but we are well-suited to handle any type of investigation from simple surveillance investigations to more complex fraud and embezzlement cases.
Landmark Investigations can help you and your clients solve their problems. You can rely upon our experience and expertise to bring your case to a speedy resolution.
We provide answers in an unbiased and objective manner allowing you to make informed decisions. By assessing your expectations we formulate an investigation tailored to your circumstances, offering affordable rates we legally obtain evidence and reveal the truth in a discreet and confidential manner.Worry is not the answer to your concerns. Call and take advantage of the free consultation. We guarantee a professional, discreet and absolutely confidential service.
Call 949-662-5080
Speak to a professional now
Private Investigator Services
Message us via our Contact Form
The results of a well-planned investigation will allow you to put your suspicions to rest and make informed decisions. Landmark Investigations covers the following scenarios:

CALI Leadership Member
Orange County Governor

ACFE
Member
Certified Fraud Examiners

Licensed
Investigators
Experienced Investigators

Process
Servers
Registered Process Servers
Landmark Investigations
We specialize in surveillance, background checks, forensic accounting, and process service. We provide answers in an unbiased and objective manner allowing you to make informed decisions.
By assessing your expectations we formulate an investigation tailored to your circumstances, offering affordable rates we legally obtain evidence and reveal the truth in a discreet and confidential manner.
Worry is not the answer to your concerns. Call and take advantage of the free consultation.
We guarantee a professional, discreet and absolutely confidential service.
Call 949-662-5080
Speak to a professional now
Private Investigator Services
Message us via our Contact Form
The results of a well-planned investigation will allow you to put your suspicions to rest and make informed decisions. Landmark Investigations covers the following scenarios:
These ARE SOME OF
THE MANY SERVICES WE OFFER:
Landmark Investigations is a trusted resource for investigative and legal support. Our purpose is to provide our clients with the most comprehensive investigative results.
- Surveillance Investigations
- Background Checks
- Forensic Accounting
- Corporate Due Diligence
- Financial Investigations
- Pre-trial Investigations
- Civil Investigations
- Criminal Defense
- Process Service
- Insurance Fraud
- Personal Investigations
- Accident Scene Investigations
- Social Media Searches
- Activity Checks
- Recorded Statements / Field Interviews
- Videography Services

A Trusted Resource For Investigative and Legal Support
Our purpose is to provide our clients the most comprehensive investigative results.