VETERAN-OWNED • WASHINGTON
About Sentinel Advisory Group
Built on military intelligence experience and a commitment to disciplined research, professional discretion, and factual investigative reporting, Sentinel Advisory Group provides investigative services designed to help clients uncover relevant facts and make informed decisions.
Meet the Founder
Cory Ferris
Founder | Sentinel Advisory Group
Cory Ferris, a retired U.S. Army Special Forces Intelligence Sergeant, founded Sentinel Advisory Group. His military career included over a decade of special reconnaissance, intelligence collection, analysis, operational planning, and detailed reporting in complex environments.
Drawing on that experience, Cory brings a disciplined, intelligence-driven approach to civilian investigations. His work emphasizes thorough research, careful planning, discreet investigative methods, and factual documentation that clients can rely on.
Cory founded Sentinel Advisory Group to provide attorneys, businesses, and individuals with professional investigative services grounded in integrity, accountability, and a commitment to uncovering the facts.

Our Mission
Our mission is to provide attorneys, businesses, and individuals with reliable investigative information through disciplined research, discreet fieldwork, and clear, objective reporting.
We approach every assignment with integrity, professionalism, and respect for confidentiality. By focusing on documented facts rather than assumptions, we help our clients understand complex situations, evaluate relevant information, and make informed decisions with confidence.
Our Investigative Approach
Every investigation begins with understanding the client's objectives. Sentinel Advisory Group develops a focused investigative strategy tailored to each assignment's circumstances.
Through disciplined planning, lawful investigative methods, and objective documentation, we work to uncover relevant facts and deliver clear, actionable findings.
01
Define the Objective
Establish clear investigative questions, client objectives, and an appropriate scope of work before beginning an assignment.
02
Gather & Verify
Conduct lawful, discreet research and observations to gather relevant information, verify findings, and document activities accurately.
03
Report the Findings
Deliver organized, objective investigative reports that clearly distinguish documented facts from assumptions and unanswered questions.
Ready to Work With Sentinel Advisory Group?
Whether you're an attorney seeking investigative support, a business facing a sensitive concern, or an individual seeking answers, Sentinel Advisory Group is here to help you take the next step.
Contact us to discuss your investigative needs and learn how our disciplined, discreet, and fact-driven approach can help you move forward with confidence.
