The Sentinel (2006) « annukkahaglundsblog

The storyline revolves around veteran USSS Agent Pete Garrison (Michael Douglas), who saved a president's life twenty years prior by taking a bullet for him and now he heads the protection detail for the first lady. ... After Garrison informs all of the key players about the conspiracy, Breckinridge is assigned the task to find the mole and all of the USSS Agents on protection details are forced to take a polygraph test to determine whether or not they ARE hiding ...