There’s a fine line between friends and enemies.Called the “greatest love story ever told” when it was first released in 2008, the Shades of Gray Trilogy is sweeping Southern fiction that, according to one reviewer, “transcends the pages to settle in the very marrow of the reader’s bones.” Duty Bound takes readers across the rolling hills of Virginia in a page-turning tale of action and adventure as a Union spy spars with a renowned Confederate cavalry commander. Gallantry and chivalry are put to the test when Colonel Alexander Hunter discovers that Andrea Evans is not only the woman he promised his dying brother he would protect, but is the Union spy he has vowed to his men he would destroy.