Brain surgeon Allen Wyler writes a medical thriller on the bleeding edge of new-millennium hospital technology B rain surgeon Dr. Tyler Matthews suspects that something is murderously wrong with the hospital's new computerized medical records system.Doctors and nurses are making preventable errors that are killing patients-and threaten many more: - A comatose man is given a fatal dose of insulin even though he isn't diabetic. - An ulcer patient dies of shock after receiving a transfusion-of the wrong blood type. - A recovering heart patient receives a double dose of medication that triggers a fatal heart attack.