A comprehensive list of private detectives and agencies offering professional investigation services in Knoxville, TN. Read unbiased customer reviews and recommendations of local investigators. 
If you have Polygraph, Investigative or Security Guard needs, reach out to us for effective solutions. Kendall W. Shull is the only person in the world to have attained a Masters of Science in Polygraphy. He is also a member of the American Polygraph Association and The American Association of Police Polygraphists.
Robert VanNorstran — I was involved in situation with another person. He was lying about what had happened. It was his word against mine. So I
Security Walls offers the highest in Reliable, Comprehensive & Complete Security and Investigative Services. We have the experience and resources to provide you the results you need with professionalism, safety & integrity. To provide security and investigative services that will be reliable, comprehensive and complete.