Julie Swanson is a single, hardworking professor, admired by her University of Minnesota students. She awakes in a hospital following a brutal beating and begins to experience strange déjà vu-like sensations. She seeks answers from renown neuroscientist Karl Undset who compares her unusual episodes to a well-established scientific condition known as dual processing. Her injury has resulted in a new ability to sense elevated autonomic indicators present in certain voice patterns, those that change under stress. She’s processing these indicators in the same way a polygraph detects elevated levels of blood pressure and skin conductivity. Julie, in effect, has become a lie detector. She and her brain surgeon become romantically involved and together they devise a plan to use her ‘sixth sense’ to find her attacker. This intriguing medical mystery is based on established neuroscientific principles that credibly explains how Julie’s condition is not only possible but is believably intriguing.