Kendall W. Shull is the only person in the world to have attained a Masters of Science in Polygraphy. He has been offering his services as a private investigator in Tennessee and across the USA since setting up Kendall Investigations in 2001, after a long and accomplished career with the FBI, where he served as the Chief and Program Manager of the entire FBI Polygraph Program.

Ken served as a Special Agent of the Federal Bureau of Investigation (FBI) for over 25 years. During his service in the FBI, Mr. Shull played a significant role in the investigation and prosecution of several major cases both nationally and internationally. Mr. Shull began conducting polygraph examinations in 1991 for the FBI Washington D.C. Field Office and became a Polygraph Supervisor at FBI Headquarters in 1995 before being promoted to Chief of the entire Polygraph Program in 1999.

Ken is one of the world's leading experts in the field of polygraph and has had his research published by several journals and publications.

Ken is a member of the following Associations & Societies:

• The Society of Former Special Agents of FBI
• FBI Agents Association
• American Polygraph Association
• The America Association of Police Polygraphs

Due to his expertise, Ken has provided counsel on a number of television shows including:

• Couples Court with the Cutlers
• Investigation Discovery Channel
• Entertainment Tonight
• Chrisley Knows Best