Dr. Lou Welcome must stop an epidemic, save his best friend, and uncover a shadowy group known as One Hundred Neighbors that has infiltrated society and is using health institutions as hostages.

Working in a mobile clinic while struggling with the challenges of PTSD, veteran doctor Nick Garrity searches for a missing war buddy and finds himself pitted against a terrifying psychopath who is disguising some of his kills as suicides.

Dr. Carrie Bryant's four years as a neurosurgical resident at White Memorial Hospital have earned her the respect and admiration from peers and staff alike. When given the chance of performing her first unsupervised brain surgery, Carrie jumps at the opportunity. What should have been a routine, hours long operation, turns horribly wrong and jeopardizes her patient's life. Emotionally and physically drained, Carrie is rushed back to the OR to assist...