Shane and Gemma welcome a distinguished guest, William Ortiz, a retired FBI Special Agent and decorated Marine Corps veteran. With his extensive experience in federal law enforcement and as the founder of Ortsec, a professional polygraph service company, William brings invaluable insight into the science and practice of polygraph examinations. The episode explores the intricacies of how lie detector technology works, its established role in law enforcement investigations, and its potential application to cold cases like Sister Cathy's. The discussion examines both the capabilities and the acknowledged limitations of polygraph technology in the pursuit of truth.

Who Killed Sister Cathy? is an ongoing investigation into the unsolved murder of Sister Catherine Cesnik. Subscribe and follow for new episodes.

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