Leadership Built on Service. Driven by Experience.
LINUS Investigations & Consulting was founded by Joanna Collins and Duane Collins following distinguished careers in federal law enforcement and public service. Today, LINUS is recognized as a Woman-Owned and Service-Disabled Veteran-Owned Small Business (SDVOSB) dedicated to providing investigative excellence, forensic consulting, and litigation support throughout Texas.
Our clients trust us because our experience extends far beyond conducting investigations. Throughout our careers, we have supervised investigative personnel, directed complex criminal and administrative investigations, managed evidence collection and forensic operations, developed investigative policies, and provided strategic guidance in matters requiring the highest levels of professional judgment and integrity.
Every investigator assigned to a LINUS case brings substantial investigative experience developed through careers in government service and private practice. Collectively, our professionals have conducted or supervised thousands of criminal, administrative, and forensic investigations involving complex legal, regulatory, and evidentiary issues.
Forensic Expertise That Withstands Scrutiny
Our forensic consultants are nationally recognized professionals with extensive education, specialized training, and decades of practical investigative experience.
They have processed and documented complex crime scenes, supervised forensic operations, reviewed investigative sufficiency, and served as subject matter experts in matters requiring meticulous analysis and objective evaluation.
Their expertise extends beyond evidence collection. They understand the investigative process from initial response through courtroom presentation, allowing them to evaluate investigative decisions, identify deficiencies, and provide objective opinions supported by established investigative principles and accepted forensic practices.
Trusted Guidance for Complex Matters
Whether conducting an independent investigation, reviewing an existing investigation, or providing strategic consultation to attorneys and organizations, our commitment remains the same:
To ethically uncover the facts, preserve investigative integrity, and provide our clients with objective, defensible, evidence-based findings that support informed decision-making.
No matter the complexity of the assignment, our professionals approach every investigation with discretion, professionalism, and an unwavering commitment to excellence.
Joanna Collins, MFS (Colonel, USAFR Ret.)
Founder of LINUS Investigations & Consulting. Joanna has over 25 years of experience as a criminal investigator with the US government and has served in positions ranging from special agent, regional forensic consultant, forensics program manager, supervisory special agent, special agent in charge, to regional deputy director, and regional director. As a forensics expert for over 18 years in her law enforcement career, she has trained US and foreign government agencies in crime scene processing and forensic investigative skills. During her time as a forensic program manager, she was the final review authority for all death cases, sexual assault cases, and child sexual assault cases. Joanna has also completed internships with the Armed Forces Institute of Pathology; Cook County (IL) Medical Examiner's Office; and the Baltimore City Medical Examiner's Office. She is currently the Immediate Past President of the American Academy of Forensic Sciences, serves on the Board of Directors Executive Committee, and is a past Chair of the Forensic Sciences Foundation. Additionally, she is a seasoned expert in child forensic interviewing and has trained government investigators in that skillset. She has worked as an expert consultant in forensics in the private sector for almost 20 years. She is recognized as an expert witness and has testified in that capacity at the state and federal level. Joanna holds a Top Secret / Sensitive Compartmented Information (TS/SCI) security clearance with national security-scope polygraph.
Click the photo to read about Joanna in San Antonio Magazine / Women Shaping San Antonio
Click the AAFS logo to read about Joanna's recent publication on vicarious trauma
Duane Collins, MSI
Co-founder of LINUS Investigations & Consulting. Duane has over 30 years of law enforcement experience which began with the United States Air Force and the San Antonio Police Department. For over 20 of those years he served as a federal criminal investigator with the US government in positions within the US and multiple foreign countries ranging from special agent, supervisory special agent, clandestine case officer, regional division chief, special agent in charge, to divisional deputy director. He has extensive experience in counterintelligence and insider threat investigations, many of which he conducted as part of the US intelligence community. Throughout his career, he has conducted and overseen the full spectrum of felony-level investigations to include internal affairs, integrity, administrative investigations, and crime scene processing. Duane also has extensive experience in criminal defense investigations and internal business investigations and oversees the investigative operations of LINUS Investigations. He holds a Top Secret / Sensitive Compartmented Information (TS/SCI) security clearance with national security-scope polygraph.
When you retain LINUS Investigations and Consulting, you gain more than an individual investigator—you gain the collective knowledge and experience of a collaborative team. Our professionals draw upon decades of investigative leadership, forensic expertise, and litigation support experience to ensure every case benefits from multiple perspectives and the highest professional standards. Every significant case benefits from collaboration. At LINUS Investigations and Consulting, our investigators routinely consult with one another, combining decades of investigative, forensic, and leadership experience to ensure no critical issue is overlooked. That collaborative approach provides our clients with a depth of expertise rarely available through a single investigator.
