Frizell Group has been an indispensable investigative asset. The owner, David Frizell, is a relentless and tenacious investigator who has the best interview skills I have ever seen. In my 25 years in Federal Law Enforcement, I have never witnessed as skilled an interrogator as David. He has solved numerous cases with little or no actual evidence. As significant as his investigative skills are, David’s unwavering integrity and absolute resolve to be truthful and honest is his defining asset. I strongly recommend Frizell Group to anyone needing a top-notch investigative firm that can be trusted and provide you with outstanding results.
JohnDirector of Global Security · International Petrochemical Manufacturer
Client and Peer Feedback
Trust is earned through performance.
High-stakes investigative matters require more than technical capability. Clients need professionals who are careful, responsive, discreet, and able to provide useful findings under pressure.
The comments below reflect feedback from corporate security leaders, legal professionals, government counsel, and investigative peers who have worked with Frizell Group or David P. Frizell, Jr.
Featured Testimonials
What clients say about Frizell Group.
Frizell Group has the depth of knowledge and resources to support a Security Director’s day-to-day security needs and complex investigations. They focus entirely on the mission at hand and quickly integrate themselves with the corporate security organization. Their investigators are seasoned professionals who not only gather the facts but conduct root cause analysis and offer recommendations that bring long-term value to the organization. I encourage my peers or others needing security and investigative services to contact Frizell Group — it would be the right call.
RobertDirector of Global Security · International Oil Services Firm
Additional Feedback
Credibility across legal, investigative, and professional settings.
Frizell Group has earned and kept my trust over the years by being responsive, thorough, careful and creative. There’s a personal touch, too, that translates into superior service. They care, and that means a lot.
GregAssociate General Counsel · International Financial Services Firm
David Frizell is an outstanding investigator who achieves excellent results, all the while staying within the boundaries of the law and ethical parameters for investigators.
JohnAssistant General Counsel · U.S. Government Agency
There is absolutely no one else I would place in an interview room to obtain truthful information.
VincentPresident · Investigative Services Firm
David Frizell has a wealth of high-caliber experience going back to his days at NCIS, CIA, and beyond. He is truly in the upper echelon of his industry and I recommend him absolutely.
JerryExpert · Digital Forensics and E-Discovery
Common Themes
What the feedback consistently reinforces.
Results under pressure
Clients and peers repeatedly emphasize investigative effectiveness, especially in difficult or evidence-limited matters.
Professional integrity
Feedback highlights ethical boundaries, truthfulness, and work that can withstand scrutiny.
Practical value
Clients value not only facts, but root cause analysis and recommendations that improve the organization.
Trusted relationships
Repeat trust is a recurring theme, particularly from legal and corporate security professionals.
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