Chief resident at Boston Memorial Hospital Noah Rothauser is swamped in his new position. Noah suspects Dr. William Mason of an error during the operation and of tampering with the patient’s record afterward. But Mason is quick to blame anesthesiologist, Dr. Ava London. When more anesthesia-related deaths start to occur, Noah is forced to question all of the residents on his staff, including Ava, and he quickly realizes there’s more to her than what he sees.