About Us

We're Private Investigators serving Maryland, Virginia, and Washington DC

Formed in 1973, LII has many years of private investigation experience in working with individuals, insurance professionals, attorneys, and the business community. LII’s investigative experience is renowned as our affiliations allow us to conduct investigations worldwide. Our staff of investigators and detectives has also worked hand-in-hand with other professional investigators conducting investigations in 46 other states, as well as 15 countries abroad.


Legal Investigations, Inc. is licensed and insured to conduct investigations throughout the Mid-Atlantic Region. LII 's main office is located in Alexandria, Virginia. Our satellite offices are located in Gainesville, Virginia and La Plata, Maryland. We actively conduct investigations in Washington DC, Virginia, and Maryland.

Executive Profiles

Michael J. Russell, Director/President

Mr. Russell has been a licensed investigator since 1978. Mr. Russell is a graduate of Frostburg State University and received his Masters Degree in Forensic Science from George Washington University in 1984. He is a graduate of the Maryland Institute of Criminal Justice and a licensed polygraph examiner in the State of Virginia. Mr. Russell is the Compliance Agent and Qualifying Agent for Legal Investigations and has conducted investigations throughout many states in the country. He has testified as a child recovery expert and a domestic relations expert and has worked on over 12,000 cases involving criminal defense, insurance defense, and domestic related matters, nationally and internationally. Mr. Russell places emphasis on leadership, teamwork, ethics and core values which has been the force behind Legal Investigations Inc. Mr. Russell is a member of the National Association of Legal Investigators (NALI), an Associate Member of Certified Fraud Examiners (CFE), Maryland Investigators and Security Association (MISA)Council of International Investigators (CII), and recipient of the Meritorious Service Award in Charles County, Maryland.

Richard S. Alpert, Vice President

Mr. Alpert is the Vice President and Field Manager for Legal Investigations. He is a 1993 graduate of the University of Maryland, with a B.A. degree in Criminology and Criminal Justice. Mr. Alpert is also a graduate of the Northern Virginia Security Academy, and maintains licenses in MD, DC, and VA in addition to holding a compliance agent certification in Virginia. He has testified extensively on insurance defense matters, as well as domestic relations matters and worked on over 10,000 cases. He has worked nationally in over 35 states and internationally on domestic relations matters. Mr. Alpert is a member of the National Association of Legal Investigators (NALI), Maryland Investigators & Security Association (MISA), Council of International Investigators (CII). Mr. Alpert has been with the firm since 1993.

Mark J. Lettmann, Secretary

Mr. Lettmann is the secretary and chief investigator for Legal Investigations. He is a graduate of Eastern Kentucky University College of Law Enforcement with a B.S. degree in Asset Protection; Investigations. Mr. Lettmann is also a graduate of the Northern Virginia Security Academy and maintains licenses in MD, DC, and VA. He has testified on numerous insurance defense and domestic relations matters and has conducted surveillance both nationally and internationally. Mr. Lettmann is a member of the National Association of Legal Investigations (NALI)Private Investigators Association of Virginia (PIVA)Council of International Investigators (CII).

Sandrine Guidry, HR Manager

Ms. Guidry's unique qualifications as both a licensed investigator and experienced interpreter have provided Legal Investigations, Inc (LII) the opportunity to serve local, national and international clientele. Ms. Guidry is a graduate of George Mason University with a B.A. degree in both International Affairs and French. Ms. Guidry has over 30 years experience in market assessment and research. She oversees the marketing department and is closely involved with our customers to maintain a healthy and beneficial relationship.

About Legal Investigations, Inc.

All Legal Investigations, Inc (LII) investigators are full time, fully insured employees. We additionally have part time personnel for special operation investigations. Our investigators have either a degree in the Criminal Justice field, prior law enforcement or military experience. All investigators have undergone a background investigation and are licensed in our coverage areas. Each investigator has had extensive classroom and fieldwork training with annual training. Investigators use state-of-the-art technology, so they can provide our customers with the superior level of performance.

Legal Investigations provides private investigator services to the greater Washington DC Metro area, including the communities of:

Arlington County, VA
Crystal City
Pentagon City
Fairfax County, VA
Great Falls
Loudon County, VA
South Riding
Prince William County, VA
Dale City
Charles County MD
Indian Head
La Plata
Including St Mary's, Calvert, and King George Counties
Montgomery County, MD
Chevy Chase
Silver Spring
Prince George's County, MD
College Park
Legal Investigations, Inc has been providing private investigators to the Washington, DC area for nearly 50 years.  We are well established and highly effective professionals capable of providing any type of investigation that you might need.
6066 Franconia Road Alexandria, Virginia 22310

We're Licensed!
VA #11-1254
MD #23PLU-PD27966 
DC #3049

© 2022, Legal Investigations Inc.  All rights reserved.
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