About Landmark Investigations

We are a full-service investigative agency headquartered in Corona Del Mar, CA, We assist our clients by performing discreet and confidential investigations.  We provide our clients with the answers they need in order to make important decisions.

Landmark Investigations is owned and operated by Tom Graybill.  Tom prides himself on putting his clients first and exceeding their expectations.

Prior to starting Landmark Investigations, Tom was the lead investigator for a large insurance company and he investigated thousands of high-profile insurance claims.  Tom is an expert at fraud investigations, background checks, surveillance and forensic accounting.

In 2006, Tom earned his MBA, with concentration in Finance, from Pepperdine University in Malibu, CA.  As a result, Tom is also an expert in financial investigations, asset investigations, and forensic accounting investigations.

Tom Graybill, MBA, CEO

How We Work

How We Work

We are proud to call ourselves expert problem solvers, we take advantage of all the resources available to us, along with industry leading training and experience to work with our clients to help them ahieve their goals in the most effective and efficient way possible.

Why Choose Landmark Investigations?

Why Choose Landmark Investigations?

Our professional investigations team has the experience and training you need to ensure that you receive the best results possible. We take advantage of the knowledge we have learned throughout the years, as well as the extensive network we have developed in order to provide you with the highest level of service in the industry.

Your best choice for professional investigative services in California

we are here to help

Contact us today to discuss your case.

We get results for our clients.


We will not take your case unless we are confident we can provide the service you desire. Once we take your case we will conduct the investigation in a time efficient and professional manner, always keeping your satisfaction as our goal. At the conclusion we will deliver a concise and well written report in a timely manner. Most of all we will follow up to be sure that you are satisfied with the service provided.

We look forward to the opportunity to discuss your project. We know investigative matters often involve highly charged, private situations that require the utmost discretion. We are sensitive to this and know how to minimize the stress in handling matters of a delicate nature. Call or e-mail and we’ll give you the information you need to make a decision that will lead you to the peace of mind you are looking for.


Here are a few of the locations where we have helped clients get the information they need:

Professional Investigations

In order to provide you with the best service, our team has been trained and equipped with the latest investigative tools and resources.


Your privacy is very important to us, we will not discuss any information about your case with anyone except you. We guarantee it.

Talk To An
Expert Today

Speak with a member of our professional investigations team for free, we can help, request a free consultation now.

Corporate Headquarters:
2744 E. Coast Highway, Suite 7
Corona Del Mar, CA 92625

Direct: (949) 662-5080
Email: tom@landmarkinvestigations.com

Copyright 2019 Landmark Investigations, Corona Del Mar, CA | landmarkinvestigations.com | All Rights reserved