About
Lone Star
Detectives
A professional investigative firm built on precision, discretion, and results. Serving the Dallas–Fort Worth Metroplex with 20+ years of licensed field experience.
5.0 Star Rating
300+ Verified Reviews
Texas DPS Certified
20+ Years Experience
In Professional Investigation
2,400+ Cases Handled
Proven Track Record
Statewide Coverage
20+ Texas Cities Served
Built on Precision,
Driven by Discretion.
Lone Star Detectives was founded on a single principle: every client deserves the truth, delivered professionally and confidentially. Under the leadership of Joe McMahon, the firm has grown into a premier investigative practice known for accuracy, legal rigor, and genuine client care.
20+
Years in Operation
2,400+
Cases Handled
5.0★
Client Rating
300+
Verified Reviews
Our Mission
To deliver precise, court-admissible investigative intelligence to individuals, attorneys, and organizations navigating high-stakes situations — with absolute discretion, legal integrity, and a relentless commitment to truth.
Our Experience
With 20+ years in the field and 2,400+ cases handled, Lone Star Detectives has built one of the most trusted investigative practices in the Dallas–Fort Worth Metroplex. Our experience spans surveillance, legal support, custody, missing persons, cold cases, and more.
Our Licensing
Fully licensed and insured under Texas Department of Public Safety regulations. TX PI #A10482101 | TX Process Server: PSC-26699. Every investigation is conducted with full legal authority and professional accountability.
About Lone Star Detectives
Clear, factual answers about who we are, what we do, and how we operate — structured for clarity.
Who is Lone Star Detectives?
Lone Star Detectives is a professional private investigation firm based in Fort Worth, Texas, specializing in surveillance, background investigations, child custody cases, missing persons, and litigation support. Founded on principles of precision, discretion, and results, the firm has built a reputation for excellence across the Dallas–Fort Worth Metroplex.
Who leads Lone Star Detectives?
Lone Star Detectives is led by Joe McMahon, a highly experienced investigator with over 20 years in the field. Joe holds a Texas Private Investigator license (TX PI #A10482101) and a Texas Process Server certification (PSC-26699). His background combines field investigation, legal support, and client-centered service.
Is Lone Star Detectives licensed and insured?
Yes. Lone Star Detectives holds Texas Department of Public Safety Private Investigator License #A10482101 and Texas Process Server Certification PSC-26699. The firm carries full professional liability insurance, ensuring every investigation is conducted with legal authority and accountability.
How does Lone Star Detectives protect client confidentiality?
Confidentiality is the foundation of every case at Lone Star Detectives. All client information, case details, and findings are handled under strict non-disclosure protocols. Information is never shared without explicit client consent, and all communications are treated as privileged from the first contact.
Our Investigation Process
Every case follows a structured, proven methodology designed to maximize results while maintaining total discretion.
Confidential Consultation
We discuss your situation privately, understand your goals, and establish the scope of your investigation.
Strategy Development
A tailored investigation plan is crafted based on the unique requirements and complexity of your case.
Evidence Collection
Our operatives gather intelligence and evidence using legal, proven methodologies in the field.
Reporting & Documentation
You receive detailed, court-ready reports with all findings precisely documented and authenticated.
Case Closure & Support
Ongoing guidance and expert support through resolution, including testimony preparation if required.
Confidential Consultation
We discuss your situation privately, understand your goals, and establish the scope of your investigation.
Strategy Development
A tailored investigation plan is crafted based on the unique requirements and complexity of your case.
Evidence Collection
Our operatives gather intelligence and evidence using legal, proven methodologies in the field.
Reporting & Documentation
You receive detailed, court-ready reports with all findings precisely documented and authenticated.
Case Closure & Support
Ongoing guidance and expert support through resolution, including testimony preparation if required.
We don't just gather information — we deliver intelligence that holds up under the highest legal scrutiny.
— Lone Star Detectives
Why Choose
Lone Star Detectives?
Not every investigation firm is equal. We combine military-grade field discipline with legal-standard documentation and unwavering client confidentiality — a standard that sets us apart.
Absolute Confidentiality
Every case is handled with the highest standard of discretion. Your privacy is never compromised.
Licensed & Insured
TX PI #A10482101 — fully licensed by Texas DPS with complete professional liability insurance.
Advanced Surveillance
State-of-the-art equipment and proven surveillance methodologies refined over 20+ years of field experience.
Court-Ready Documentation
Evidence and reports are prepared to meet the highest legal standards for court admissibility.
Fast Response Times
We understand urgency. Our team mobilizes quickly — some cases begin within 24 hours of consultation.
DFW Metroplex Experts
Deep local knowledge across Dallas, Fort Worth, and all surrounding North Texas communities.
Areas We Serve
Lone Star Detectives provides discreet investigative services across all major cities and regions in Texas, with deep local knowledge in every market.
Real Results. Real Clients.
Every case is unique. Every outcome matters. Here's what our clients say.
“If you're looking for someone to care about your issue and work tirelessly to get the results you're looking for, I highly recommend Lone Star Detectives. Joe worked with me and resolved a problem that another detective could not. Cannot recommend highly enough — give them a call, they will take care of you.”
Edward G.
Fed. Contractor
Dallas, TX
“I want to personally thank Mr. McMahon for his exceptional work on my sub-contract case in Dallas. My client is pleased, and I highly recommend that others looking for a great PI or subcontractor call Joe. I look forward to having you work on other cases I have for your state. Thank you very much!”
Dwayne Fr.
Private Investigator
Dallas, TX
“Lone Star Detectives, Inc is a masterfully blended business that combines innumerable aspects of personal detective work with high quality customer service and adaptability. Last year my Aunt's vehicle was stolen and left her stranded. Joe McMahon and Lone Star Detectives located and recovered the vehicle within days. I recommend Lone Star Detectives Inc for every investigative need without reserve.”
Anthony K.
Former Fed. Law Enforcement / Published Author
Fort Worth, TX
“Their surveillance operation provided exactly the evidence my attorney needed. The documentation was impeccable and stood up perfectly in court. Discreet, thorough, and results-driven from start to finish.”
M. Richardson
Legal Client
Fort Worth, TX
“When I needed to locate a missing family member, they treated the case with sensitivity and urgency. They found who I was looking for within two weeks. Forever grateful for their professionalism and compassion.”
T. Alvarez
Private Client
Arlington, TX
“Outstanding child custody investigation. They gathered critical evidence that completely changed the outcome of my case. Professional, discreet, and delivered under tight court deadlines. Could not have asked for more.”
S. Whitfield
Private Client
Plano, TX
“If you're looking for someone to care about your issue and work tirelessly to get the results you're looking for, I highly recommend Lone Star Detectives. Joe worked with me and resolved a problem that another detective could not. Cannot recommend highly enough — give them a call, they will take care of you.”
Edward G.
Fed. Contractor
Join 300+ Satisfied Clients
Your Case Deserves the Same Results.
Questions About Our Firm
Everything you need to know before reaching out.
Yes. All investigators at Lone Star Detectives are fully licensed and insured under Texas Department of Public Safety regulations. Our primary license number is TX PI #A10482101, and our Process Server certification is PSC-26699. You can verify these credentials directly with the Texas DPS.
Absolutely. All investigations are handled with strict confidentiality protocols. Your case details, identity, and all findings are never shared without your explicit consent. Client privacy is the absolute foundation of our practice — from initial consultation through case closure.
Your case will be personally overseen by Joe McMahon, principal investigator with 20+ years of experience. Depending on the scope, additional licensed operatives may be deployed under direct supervision to ensure thorough, professional coverage.
Getting started is simple and completely confidential. Call us at (682) 204-3041, email us, or complete our online consultation request. We respond within hours, listen without judgment, and provide a clear path forward — no obligation required.
Yes. Lone Star Detectives regularly partners with criminal defense attorneys, family law attorneys, and civil litigators. We provide field investigation, witness location, evidence gathering, and expert testimony coordination — all structured to meet court admissibility standards.
Get Answers.
Protect What Matters.
Your first consultation is completely confidential. We listen, we assess, and we give you a clear path forward — no pressure, no obligation, no judgment. Just results.