After a violent incident with a patient leaves scars on both her mind and body, psychiatrist Dr. Maggie Levine craves isolation. A radio talk show host seems to be the perfect profession, a job where she can help people from a distance while staying safe. When a strange caller begins stalking her on the air and murdering people to get her attention, Maggie realizes she can no longer close herself off from the outside world.
A personal security expert, former Secret Service Agent Ethan Townsend is no stranger to tracking down the most violent monsters of society and bringing them to justice. Still, it will take all of Ethan's skills to protect his new assignment, the irresistible Maggie, from a man intent on teaching her the ultimate lesson in fear….