In 1822, a young Canadian paddler named Guillaume Roleau is near death after suffering a gunshot wound to the stomach. His recovery is dramatic and scientifically important. The injury has resulted in a traumatic fistula--a porthole between the outside world and Guillaume's abdominal cavity and organs. The treating physician, Dr. William Barber, immediately recognizes the incredible opportunity for medical research and conducts a lengthy series of experiments on the process of human digestion.
Guillaume--patient, research subject, and guest in the doctor's cabin--is rowdy and frequently uncooperative. He continues to participate in the grisly experiments at least partially out of affection for the physician's wife, Julia, who helps nurse him back to health as well as providing emotional sustenance.
Julia ultimately makes a large, uncredited contribution to Dr. Barber's research. At her husband's request, she has sexual relations with Guillaume so that the unreliable man will remain with the doctor until the experiments are all completed. The efforts of this tragic trio result in a landmark textbook on gastrointestinal physiology authored by Dr. Barber and Julia's illegitimate son, Jacob, sired by Guillaume Roleau.
