A medical conference becomes a murder scene, in this mystery starring a doctor in rural Scotland by the author of Shooting Pains. Dr. Cathy Moreland welcomes the chance to stay at a country hotel for an advanced life support course. But the atmosphere among her fellow practitioners seems fraught with tension—and the equipment meant for saving lives is instead used to kill a bad-tempered doctor. He will not be the only one to die—and when Cathy discovers that intimidating notes were being sent to the attendees, including one that calls Cathy herself out for an unethical act in the past, she must find out who may have broken an oath to do no harm . . .