"Greg Hartley knows human behavior in and out of the trenches from battlefield interrogations to the board room. A former US Army Interrogator, Interrogation Instructor, and Resistance to Interrogation Instructor, Greg has written ten books with Maryann Karinch on body language and behavior. He made a twenty-year successful climb of the corporate ladder culminating in a role as an operating partner in a Private Equity Investment firm.Greg has appeared on every major television network and has been featured by many national and international media outlets for radio, print, and Internet to analyze and explain the why behind what people are saying. He regularly contributes to network news and programs such as Dr Phil. He has appeared in four feature length TV programs dealing with human behavior on Discover, National Geographic, History Channel, and UKTV4 Greg is a founder of the popular YouTube channel ""The Behavior Panel"" with 860K subscribers and more than 120 million views. He is also a host of The Behavior Panel, the first weekly network TV show dedicated to body language and behavior and is constantly ranked in the top 4 body language experts in the world. Maryann Karinch is the author of 36 commercially published books, most of which focus on human behavior. She co-authored many of them with subject matter experts, including Greg Hartley, a former CIA clandestine officer, and four physicians.Clients as diverse as the US Department of Homeland Security, CLS Group, and the International Spy Museum have hired her for body language and interpersonal skills training. She was elected to membership in The Explorers Club in 2010 in part because her of adventures focused on understanding responses of the human psyche in extreme conditions. She is one of the few women to have completed the inaugural Eco-Challenge, is an experienced skydiver and kayaker, holds an open-water certification in scuba, and is a former pilot. Maryann is also founder of The Rudy Agency, a full-service literary agency, and Armin Lear Press, founded in 2020. Armin Lear is a member of the Independent Book Publishers Association and distributes its books worldwide in English through Ingram and to libraries through Baker & Taylor."