About Landmark Investigations
Landmark Investigations offers surveillance, background checks, forensic accounting, and process serving. We provide answers in an unbiased and objective manner allowing you to make informed decisions.
Whether you are suspicious of a phone number, your partner’s recent behavior, an employee’s conduct, or wish to monitor your child’s actions, we can provide answers to your concerns.
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.
We take a trustworthy and moral approach, ensuring a professional, discreet and absolutely confidential service. Worry is not the answer to your concerns, take advantage of our free consultation.
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:
About Landmark Investigations
Landmark Investigations offers surveillance, background checks, forensic accounting, and process serving. We provide answers in an unbiased and objective manner allowing you to make informed decisions.
Whether you are suspicious of a phone number, your partner’s recent behavior, an employee’s conduct, or wish to monitor your child’s actions, we can provide answers to your concerns.
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.
We take a trustworthy and moral approach, ensuring a professional, discreet and absolutely confidential service. Worry is not the answer to your concerns, take advantage of our free consultation.
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:
Corona Del Mar Headquarters
Call to schedule an appointment
We proudly provide quality investigative services in Orange County and the State of California.


Landmark Investigations is a private investigation agency located in Corona Del Mar, CA. We perform investigations for a diverse client base including attorneys, insurance companies, businesses, and private clients. We take pride in exceeding our clients expectations and giving every case our personal touch. We have helped thousands of clients get the answers they need.
OUR COMPANY MISSION
TRUTH & JUSTICE FOR OUR CLIENTS
Our mission is to provide relevant, accurate, and timely information to our clients so they can make informed decisions. We enjoy helping our clients get the answers they deserve. Every case we take on is unique, often like solving a puzzle, and this gives us the motivation to get the facts necessary for a successful outcome.
OUR PROMISE TO YOU
PROFESSIONAL ADVICE YOU CAN TRUST
Our private investigators will work diligently to uncover the truth, and will ensure that you are kept well informed on the progress of the investigation. We document our independent investigations by various methods – recorded statements, photographs, video, evidence collection and written reports. Should the need arise, our private investigators are available for depositions and court appearances.
Our Unique Qualifications
LICENSED PRIVATE INVESTIGATORS
We have over 15 years of investigative experience. Our investigators have been trained and equipped with the latest investigative tools and resources. Speak with a member of our professional investigations team for free.
PEPPERDINE UNIVERSITY FINANCE MBA
Mr. Graybill earned his MBA with a concentration in Finance from Pepperdine University in 2006. He is an expert in financial investigations as a result of his extensive business knowledge and experience.
GOVERNOR, ORANGE COUNTY DISTRICT:
California association of licensed investigators (C.A.L.I.)
Mr. Graybill is the current Orange County District Governor for the California Association of Licensed Investigators (C.A.L.I.). Mr. Graybill enjoys donating his time to this great organization and participating in a leadership capacity.
CERTIFIED FRAUD EXAMINER:
ASSOCIATION OF CERTIFIED FRAUD EXAMINERS (A.C.F.E.)
Mr. Graybill is a Certified Fraud Exmainer (CFE) through the Association of Certified Fraud Examiners (A.C.F.E.). Mr. Graybill works with companies and government agencies to identify and eliminate fraud.
Registered Process ServerS
We specialize in locating and serving individuals that are intentionally evading service. We use information from a wide variety of sources to locate and serve individuals that are difficult to find.
Forensic accountants
We are experienced and knowledgeable forensic accountants. We specialize in financial investigations, asset checks, and financial analysis. We provide data analytics and expert testimony in civil disputes.
CERtified professional investigator
Mr. Graybill is a Certified Professional Investigator (CPI) through the California Association of Licensed Investigators (C.A.L.I.).