Dr. Kate Morrison doesn't know how or why someone would create human bombs that are triggered by touch. But when Sergeant Andy Wyles blocks Kate from touching the patient who collapses in her Vancouver ER, Kate joins the investigation to demand answers, regardless of the danger. As the two women work together to find those responsible for creating an army of human weapons, Kate finds it increasingly difficult to ignore her feelings for the fiercely protective and unrelentingly perceptive cop. The investigation escalates, and Kate gradually begins to trust Andy, not only with her safety but also with the difficult details of her past. With lives at risk and her heart on the line, Kate must search for a way to defuse the bombs and save her patients, even as she questions the intensifying connection between herself and Andy.