The year is 1861. When spirited teenager Sarah Louisa learns that she is to be married off to her despicable neighbor, she runs away from home. Disguising herself as a boy, Sarah boldly joins the army--and before long is a soldier in the Civil War. Sarah navigates the joys and hardships of army life, all the while struggling to keep her true identity a secret. But Sarah's real adventure is only just beginning. A chance encounter with a detective soon draws her into a web of mystery, intrigue, and romance--and Sarah's courage will be put to the test as never before.