Dr. Thea Sperelakis, diagnosed as a teen with Asperger's syndrome, left the states to work with the poor. A sudden accident that puts her father, a celebrated internal medicine specialist, into a coma, brings her back to Boston. The truth about the accident is unknown until her father looks at her and begins slowly to blink a terrifying message.

They called it "minor surgery," but Nancy Greenly, Sean Berman and a dozen others -- all admitted to Boston Memorial Hospital for routine procedures -- were victims of the same inexplicable, hideous tragedy on the operating table. They never woke up. Susan Wheeler is a third-year medical student working as a trainee at Boston Memorial Hospital. Two patients during her residency mysteriously go into comas immediately after their operations due to complications...

Joe O'Brien is a forty-four-year-old police officer from the Irish Catholic neighborhood of Charlestown, Massachusetts. A devoted husband, proud father of four children in their twenties, and respected officer, Joe begins experiencing bouts of disorganized thinking, uncharacteristic temper outbursts, and strange, involuntary movements. He initially attributes these episodes to the stress of his job, but as these symptoms worsen, he agrees to see a...