Armstrong Investigations, PLLC — Dallas, Texas

Elite Private Investigations Directed by Legal Insight

Founded and led by a J.D., every case we work is built to hold — in a courtroom, before an insurance adjuster, or across a boardroom table. From domestic surveillance and corporate due diligence to fugitive recovery and apprehension, this is intelligence with a chain of custody.

Founded and led by a J.D., every case we work is built to hold — in a courtroom, before an insurance adjuster, or across a boardroom table. This is intelligence with a chain of custody. We also support licensed bail bondsmen with professional fugitive recovery locates across Texas.

Why clients trust Armstrong Investigations

J.D.

Legal Foundation

Guided by investigative best practices and a legal-minded approach — without providing legal advice.

36+

Years of Technical Expertise

Our strategic partnership with Michael Depew at TCS Consulting brings decades of specialized accident reconstruction and data forensics to every case that demands it.

TX

Statewide Reach

Headquartered in Dallas with reach across Texas and beyond—our affiliate network means jurisdictional limits rarely limit what we can do for a client.

100%

Discreet by Default

We operate on a “silent professional” standard. Our involvement is known only to those who need to know—and our evidence files are built to speak for themselves.
About the Firm

Investigation meets legal strategy

Most investigators gather information. We build evidence. There’s a meaningful difference—and it shows in the outcome.

Armstrong Investigations, PLLC was founded on a straightforward premise: an investigation is only as valuable as its admissibility. Jasen A. Armstrong, J.D. bridges the gap between raw field intelligence and high-level legal strategy, ensuring that what we document is gathered correctly, preserved properly, and presented in a way that survives adversarial scrutiny.

Through our affiliation with Michael Depew of TCS Consulting, we extend our capabilities into technical domains that most investigative firms simply can’t touch—accident reconstruction, EDR data extraction, and advanced digital forensics.

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Legal Foundation

Jasen Armstrong's legal background ensures every investigation is conducted with a deep understanding of the rules of evidence and civil procedure.

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Technical Supremacy

Through our partnership with TCS Consulting, we offer 36+ years of specialized accident reconstruction and data forensics unavailable at most investigative firms.

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Unwavering Discretion

The most sensitive matters are handled with a silent professional approach. Your exposure is managed as carefully as your evidence.

What we do

Our Investigative Services

Professional surveillance investigator conducting covert mobile observation in Dallas-Fort Worth, Texas

Comprehensive Surveillance Services

Surveillance is the backbone of professional investigation, and it is where experience separates results from guesswork. Our investigators conduct covert mobile and stationary surveillance using high-end optics, long-range photography, and discreet vehicle positioning to document activity without alerting the subject. Every observation is logged with date, time, and location and supported by time-stamped photo and video evidence, producing a clear, defensible record of what occurred and when.

Family Law & Domestic Investigations

Surveillance is the backbone of professional investigation, and it is where experience separates results from guesswork. Our investigators conduct covert mobile and stationary surveillance using high-end optics, long-range photography, and discreet vehicle positioning to document activity without alerting the subject. Every observation is logged with date, time, and location and supported by time-stamped photo and video evidence, producing a clear, defensible record of what occurred and when.

Pre-Divorce Investigations

Before a petition is ever filed, the right intelligence can protect your interests. We help clients quietly establish patterns of conduct, identify undisclosed relationships, and document lifestyle and spending behavior so that you and your counsel enter proceedings fully informed rather than reacting after the fact.

Child Custody, Abuse & Neglect

Nothing is more important than the safety of a child. In custody, abuse, and neglect matters we document the conditions and conduct that courts care about: supervision, living environment, the presence of unsafe individuals, and adherence to existing orders. Our findings are gathered lawfully and presented objectively so they can support a parent’s case and, above all, protect the child’s well-being.
Pre-divorce intelligence, child custody documentation, and infidelity surveillance across DFW — gathered discreetly and built to hold up in family court. Armstrong Investigations, PLLC.

Accident Reconstruction

Through our strategic partnership with Michael R. Depew of TCS Consulting, we bring over 36 years of accident reconstruction expertise into every crash-related case we handle. From EDR ‘black box’ extraction and 3D drone mapping to expert witness testimony that satisfies Texas Rule of Evidence 702, we provide the scientific backbone your legal team needs — whether the collision happened in downtown Dallas or the rural highways of East Texas or almost anywhere in the country.
Professional accident reconstruction investigator at a semi-truck crash scene on a Texas highway with 18-wheeler wreckage in the background Placement: Between the title and the first paragraph
Corporate background check and due diligence investigation services for Dallas-Fort Worth businesses — Armstrong Investigations, PLLC

Corporate Investigations & Background Checks

Businesses across North Texas rely on us to reduce risk before it becomes loss. Our corporate services include pre-employment and executive background checks, due diligence on partners and vendors, internal theft and fraud inquiries, workers’ compensation and fraudulent-claim verification, and asset and liability research. We help you know exactly who you are dealing with before you sign, hire, or invest.

Support for Legal Professionals

Attorneys are among our most valued clients. We serve as an extension of your litigation support team by providing reliable process serving, skip tracing, witness interviews, and other investigation-related services that help move cases forward. From locating difficult-to-find individuals and documenting key findings to delivering organized investigative reports, we provide timely, professional support tailored to the needs of legal professionals. Because our firm is led by a Juris Doctor, we have a strong understanding of litigation procedures, evidentiary standards, and the importance of thorough, well-documented investigative work.
Litigation support investigator providing witness locates, process service, and court-ready evidence documentation to attorneys in Dallas, Texas
Missing persons investigator conducting skip tracing and digital tracking search across North Texas — Armstrong Investigations, PLLC

Missing Persons & Specialized Locates

When someone cannot be found, time and method matter. We locate missing persons, estranged relatives, debtors, witnesses, and beneficiaries using a combination of database research, open-source intelligence, and field verification. Every locate is confirmed before it is reported, so you receive an answer you can act on, not merely a lead.

Fugitive Recovery Services: Locate, Apprehend, Return

When a defendant skips bail, Armstrong Investigations locates and brings them back. We serve both licensed bail bondsmen operating under active warrants and private individuals who need a fugitive located and lawfully returned through proper authority. Using skip tracing, surveillance, and digital intelligence, we develop a confirmed location — then execute a fugitive recovery and lawful apprehension.

Bail bond forfeiture case file and warrant documentation reviewed under dramatic low light — Armstrong Investigations Texas PI services
The Armstrong Advantage

What Separates Us From Every Other Firm In The Room

Most investigative firms collect information. We build evidence—and there’s a meaningful difference when the stakes involve a courtroom, a custody hearing, or a multi-million dollar claim.

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Legal-Minded, Not Attorney-Referred

Jasen Armstrong's legal background ensures every investigation is conducted with a deep understanding of the rules of evidence and civil procedure.

Technical support icon representing TCS Consulting's 36-year forensic investigation partnership with Armstrong Investigations

Technical Depth No Competitor Matches

Our partnership with TCS Consulting gives us access to 36+ years of accident reconstruction, EDR forensics, and telematics analysis that most investigative firms can't offer at any price.

Technical support icon representing TCS Consulting's 36-year forensic investigation partnership with Armstrong Investigations

Evidence Built to Last

Chain of custody isn't a formality—it's the difference between evidence that sticks and evidence that gets thrown out. We build files that survive the harshest cross-examination.

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Silent Professional Standard

Sensitive cases demand discretion at every level. Our operational security is as important as our investigative work, and every member of our team operates accordingly.

Technical support icon representing TCS Consulting's 36-year forensic investigation partnership with Armstrong Investigations

No Jurisdictional Ceiling

Headquartered in Dallas with statewide reach across Texas and a national affiliate network—geography rarely limits what we can accomplish for a client who needs results.

The Armstrong Advantage

What Our Clients Say

When the stakes are high, the investigator you choose makes all the difference. These are the people who trusted Armstrong Investigations when it mattered most.

Ready to open a case file?

Your Facts Deserve An Investigation Built To Hold Up

Whether you’re a litigator building a case, a family facing an impossible situation, or a business protecting its interests—Armstrong Investigations delivers intelligence that matters where it counts.