Our Team

Our Team

Bill Pellerin



Bill Pellerin is the founder and President of Texas Investigative Network, Inc., a Texas Corporation founded in 1994. The company employs licensed investigators in Austin, Corpus Christi, Dallas, El Paso, Fort Worth, Houston, Lubbock, McAllen and San Antonio, Texas, and conducts investigations for several major Texas corporations, law firms, insurance companies and financial institutions.

Bill also maintains a global network of highly capable, trusted professionals who are aligned with T.I.N. to conduct investigations of matters involving Corporate Theft, Embezzlement, Intellectual Property Violations, Copyright/Trademark Infringements, Commercial Litigation, Electronic Countermeasures, Computer Forensics, Cybercrimes, Financial Account Research, Insurance Claims/Fraud, Mobile/Stationary Video Surveillance, Polygraph Examinations, Executive Protection and Research/Due Diligence.

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Texas Department of Public Safety – Private Security Bureau (1987)

Special Designation/Credential
TCI, Texas Certified Investigator (2013)

Specialty Areas

  • Commercial Litigation
  • Corporate/White Collar Theft
  • Insurance Fraud
  • Financial Account Research
  • Intellectual Property matters
  • Covert Surveillance


  • Effective Use of Investigators in Litigation
  • Case Intake – Asking the Right Questions Up-Front
  • Why, When & How of Investigations in the Legal Profession


  • Texas Association of Licensed Investigators
  • National Council of Investigation and Security Services
  • Council of International Investigators
  • ASIS International
  • Crime Stoppers of Houston


University of Houston, B.S. in Criminal Justice (1990)
University of Houston, Bachelor of General Studies (1988)
Texas A&M University; Corps of Cadets (1981 – 1985) and Varsity Football Team (1982 – 1984)


  • Married with 8 children
  • Parishioner at Annunciation Catholic Church
  • That Man is You Program
  • Coach, Youth Sports

Jeff Dillender

Case Manager


In 2016, Jeff Dillender joined Texas Investigative Network, Inc., as a Case Manager. Jeff has management and operational responsibilities for the work product of 25 investigators in Texas and maintains direct communication with all field investigators to ensure that all case objectives are met.

Prior to joining T.I.N., Jeff spent over ten years as a contract, covert surveillance Investigator for several national investigation agencies, including T.I.N. Jeff’s assignments centered on worker’s compensation claims, personal injury claims and litigation, infidelity, child custody, divorce, and subject/witness locates. Jeff has also served as a guest speaker at The University of North Texas College Private Investigator Certification Program. Jeff’s extensive training, knowledge, and experience as a Private Investigator has earned him an impeccable reputation with many national insurance companies and attorneys throughout the U.S.

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Jeff has spent his entire life in the greater Houston area, graduating in the National Honors Society Program from Lamar Consolidated High School in the Lamar Consolidated Independent School District, where he was a three-year letterman for the baseball team. Jeff also attended Stephen F. Austin University in Nacogdoches, TX.

Currently, Jeff conducts, manages and supports T.I.N. related matters involving Background Investigations, Corporate Theft, Commercial Litigation, Insurance Claims/Fraud, Mobile/Stationary Video Surveillance, Due Diligence, Subject Locates, and Government/Courthouse Records research.

Darcey Holender

In-House Investigator


Darcey Holender joined Texas Investigative Network in April of 2018 as an in-house investigator and office administrator. With a background in research and analysis, Darcey currently conducts Background investigations, Subject Locates, Social Media investigations, Government/Courthouse Records research, and Mobile/Stationary Video Surveillance. Darcey also supports T.I.N. through case intake, marketing strategy and implementation, and office administration.

A native Houstonian, Darcey attended Duchesne Academy for 14 years – graduating as a “lifer” – before moving to Austin, Texas to become a University of Texas Longhorn. Darcey earned her B.A. in International Relations & Global Studies focusing on International Security and minoring in Russian, Eastern European, and Eurasian Studies.

Paul Williams

Cyber Crimes & Forensics


Paul Williams has 44 years of breakthrough innovation in cybersecurity, cryptography, artificial intelligence, high-speed databases, software quality test engineering, software quality test engineering, electronics, communications, mechanical engineering, weapons development, and defense-related technologies.

Paul has extensive experience in conducting enterprise insider threat and economic espionage investigations, risk assessments, and remediation consulting for large commercial and government organizations. Paul is also an expert in rapidly solving complex network cyber intrusions through innovative techniques.

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Paul is a national and international public speaker with over 270 speaking engagements over the past 18 years for prestigious organizations such as ACP, ASIS, IIA, ESC, ISACA, ISSA, the United States Secret Service, U.S. Department of Justice, and FBI InfraGard.

As a result of Paul’s career-long efforts against computer malware, he has collected a wide assortment of hacking tools, viruses, worms, and Trojan Horses. To this day, Paul utilizes over 25,000 major computer viruses and 2,000 Trojan Horses for cybercrime investigative purposes.

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