A killer has a promise to keep . . .

Attorney Isaac Colson only wants to put his tumultuous past in Fog Lake behind him and return to his life in Memphis. But when an ominous text threatens that he must come back or there will be deadly consequences, he knows he can't take any chances.

Rebecca Moreno has only ever loved one man-her high school sweetheart, Isaac Colson. But when his dad went to prison for murder, Rebecca's father forbade them from seeing each other again.

Years later, Isaac is back in town and old feelings are stirring. But Rebecca is harboring a secret that could change everything. When The Good Samaritan Killer strikes again, guilt pummels her. She has to tell Isaac the truth. But as events unfold, she has more to lose than ever.

Isaac and Rebecca must find answers-their lives depend on it. But everyone seems to have secrets, each that forms an obstacle to finding the truth . . . and to staying alive.