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Welcome to Wallace Investigations

Dallas* Fort Worth *Austin

Welcome to Wallace Investigations

Dallas* Fort Worth *Austin

About Us

We have boots on the ground.

Wallace Investigations is a Texas State licensed investigations company with boots on the ground in Dallas, Fort Worth and Austin. We partner with legal and corporate teams to assist with services for their criminal and civil case needs offering expert support for pending litigation and trial preparation. Our six experienced investigators make Wallace Investigations highly diverse and specialized because of their extensive individual backgrounds, which include State and Federal law enforcement, law, military, psychology, employment, health and insurance. We can guarantee that we’ll have someone with the precise skills and knowledge to help you with your investigation. We also offer photography and videography services for Federal Sentencing Video Memorandums for assistance in trial preparation. We look forward to the opportunity to work with you on your investigation and trial preparation.

At Wallace Investigations, our mission is to provide top-notch investigative services with integrity and professionalism. We strive to deliver accurate and timely information to help our clients make informed decisions. Wallace Investigations investigatory work is protected by the attorney-client privilege. Discretion is our rule and keeping the clients’ case information privileged is of most importance.

Texas DPS PSB License #A13478

Services

INVESTIGATIVE SERVICES

Criminal Defense- State and Federal
Civil Litigation - State and Federal
Background Investigations
Employment Investigations
Missing Persons/ Person Locate
Sentencing Memorandums
Video / Editing Production
Notary Services

BACKGROUND Investigative Services

Person locate: Address, Phone, Email, SSN, DOB, DL, Employment, Family Members

Criminal Background: Arrests, Convictions and Warrants

Civil Background: Bankruptcy, Liens, Judgements, Evictions and Marriage/ Divorce, FCRA Credit History

Assets: Vehicle and Property

Vehicle Tag: Registered Owner, Address, Tag Information and Vehicle Location.

Voter Registration: Party Affiliation

Social Media: Comprehensive Social Media Footprint

Licensed Private investigators

Marissa L. Wallace

Commissioned by the State of Texas as a law enforcement officer in 1998, Marissa L. Wallace rose to the the rank of senior corporal in the Dallas Police Department. Her valuable experience as a DPD patrol officer prepared her for appointment to the force’s Central Deployment Unit. She continued her police work as a covert officer on special assignments for the DPD Vice and Criminal Intelligence units. With more than 26 years of combined law enforcement and private investigative experience, her specialty is partnering in high profile criminal defense cases and assisting the attorney in preparing for trial by interviewing witnesses and gathering evidentiary materials for the defense team. Marissa's specialty also includes video production for demonstrative exhibits, focus groups and Federal sentencing.

Marissa is a licensed Private Investigator, licensed investigative company owner and LTC holder with the Texas Department of Public Safety.

Bertriam Thomas

Marissa L. Wallace

Bertriam Thomas has over 25 years of experience as a Texas-licensed Private Investigator and has been with Wallace Investigations since 2010. He also brings seven years of Judge Advocate General’s Corps (JAG) experience from his service in the US Army.

With a degree in Business Administration and a concentration in Project Management, Bertriam delivers specialized investigative services for corporate, private, and high-profile clients, as well as customized security solutions for risk management cases.

The foundation of Bertriam’s success is his ability to combine time management and problem-solving skills to effectively execute sensitive and complex investigations. Known for his professionalism and thoughtfulness, he serves as a point of contact for clients and their families throughout the legal process ensuring that their questions and concerns are handled with care.

Bertriam is licensed as a Private Investigator, Personal Protection Officer (Level IV), LTC holder, and Commissioned Security Officer with the Texas Department of Public Safety.

Whitney Harding

Marissa L. Wallace

Jenny H. Crandall

As an investigator with Wallace Investigations since 2013, Whitney Harding brings her 35 years of experience in the mental health field. Whitney's broad background in community work and her reach into education, social services, mental health and crisis counseling (suicide) are critical tools for locating and interviewing witnesses of all ages. Whitney's professionalism and empathy in her work brings a human contact for the people she interviews as well as the Client and their family. Whether State or Federal criminal investigations, this makes the investigative process less stressful for the defense team and the client. Whether she is working on a person locate or a high profile criminal investigation, Whitney's diplomatic and discretionary skills of locating, interviewing and bringing the evidence required to trial have proven to be unmatched.

Whitney is a licensed Private Investigator with the Texas Department of Public Safety.

Jenny H. Crandall

Jenny H. Crandall studied psychology and business at T.C.U. She joined Wallace Investigations in 2019 to pursue a long held interest in private investigation. Prior to this, she established success as a headhunter in healthcare and technology. Recruiting taught Jenny the essential private investigator skills of interviewing, evaluation, building rapport, and critical thinking. She has collaborated with attorneys in over 150 state felony as well as federal investigations and has been entrusted to work multiple high-profile cases using her experience, professionalism, and discretion.

Jenny also has experience testifying in state and federal cases. Using skills accrued during her time as a headhunter, Jenny is a valuable resource in healthcare or Medicare fraud cases.

Jenny has been described by attorneys as prompt, a key partner, and a lifesaver.

Jenny is a licensed Private Investigator with the Texas Department of Public Safety.

Santiago Moya

Jenny H. Crandall

Santiago Moya

Santiago Moya had a 23-year career as an FBI Agent before joining Wallace Investigations in 2019. He retired honorably from the Federal Bureau of Investigation, where he investigated a variety of federal crimes, including transnational drug organizations, kidnappings, extortions and bank robberies. After retirement, Santiago started Moya Precision & Safety (MPS), a high level firearms training company serving civilians, military contractors and law enforcement personnel. Santiago is a sought after private investigator and expert witness focusing his time to serve his clients and attorneys in the Collin County area outside of Dallas. Santiago specializes in State and Federal criminal investigations. Santiago is a licensed Private Investigator with the Texas Department of Public Safety, a fluent Spanish speaker and a graduate of the FBI Surveillance School.

Shea Griffin

Jenny H. Crandall

Santiago Moya

Shea Griffin is an experienced mitigation specialist and investigator with a strong background in federal defense, client advocacy, and criminal justice. Obtaining her law degree in 2019, Shea chose to expand her licenses and join Wallace Investigations in 2025. Her proven ability to conduct in-depth client and witness interviews, develop detailed social histories, record collection and write persuasive sentencing memorandums that humanize clients and support effective defense strategies has gained her a reputation with attorneys and experts as a competent advocate in high stakes cases. Shea is also skilled in producing sentencing videos for Federal cases. With her background and law degree, she can anticipate the needs of the attorney and client.

Shea is a licensed private investigator with the Texas Department of Public Safety and attorney with the Texas State Bar.

Welcome to Wallace Investigations

Welcome to Wallace Investigations

About Us

We have boots on the ground.

Services

INVESTIGATIVE SERVICES

BACKGROUND Investigative Services

Licensed Private investigators

Marissa L. Wallace

Marissa L. Wallace

Marissa L. Wallace

Bertriam Thomas

Marissa L. Wallace

Marissa L. Wallace

Whitney Harding

Marissa L. Wallace

Jenny H. Crandall

Jenny H. Crandall

Jenny H. Crandall

Jenny H. Crandall

Santiago Moya

Jenny H. Crandall

Santiago Moya

Shea Griffin

Jenny H. Crandall

Santiago Moya

Contact Us

How can we help you?

Wallace Investigations