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The U.S. government has sanctioned two top-secret scientific experiments, both morally questionable and potentially devastating. The brainchild of a noted pop-psychologist - overseen by a shadowy figure known for his brutal efficiency and cold disregard for human life - these twin covert operations are each part of a dark and sinister agenda: an attempt to use Multiple Personality Disorder to create the perfect assassin. Major Roger Grayson's uncanny ability to adapt to any undercover situation by becoming seemingly different people makes him the ideal person to evaluate both these projects. On the orders of his superior, General Hoyt - a troubled and secretive officer whose own purposes remain murky and unclear - Grayson launches an investigation into the goings-on behind the electrified gates of the Belfair mental health research facility, an assignment that is leading him to unsettling doubts about the nature and humanity of these projects...and about who - or what - he really is. It is also leading him to Susannah Card, a beautiful, talented, and accomplished young woman who is everything the projects' masterminds are searching for: a natural mosaic - a multiple with total dominance over her separate personalities. But Grayson's attraction and growing feelings for Susannah is drawing a lethal nightmare from his past into their lives. And now it will take all of his exceptional skills to prevent Susannah from being sucked into a grim experiment born of greed and madness that is suddenly going brutally, horribly wrong.