Deputy Margarita Ricos is young, tough, kind-hearted and smart. She's a proud Chicana! Raised on the edge of the US in Terlingua, TX. Her broad perspective of "the border", its people and its issues makes her a most effective advocate of justice and fairness in a world that is neither. In this fourth installment, Deputy Ricos is trying to prove an imprisoned man is either guilty beyond doubt or wrongly accused. Margarita, haunted by a mystery from her past, begins the fast-paced, danger-filled, winding route to the Border Ghosts.