InvisibleBy: Andrew Grant Series: Paul McGrath An Army veteran and intelligence agent goes undercover as a janitor at a federal courthouse to pursue his own brand of justice in a thriller thats part John Grisham, part Robert Crais. Propulsive and engaging from the very first page.C. J. Box, #1 New York Times bestselling author of the Joe Pickett series As a young man, Paul McGrath rebelled against his pacifist father by becoming a standout Army recruit and the