Question: Name the American medical doctor who was convicted in 1979 of murdering his pregnant wife and two daughters and whose story is ruminated over in a study by Janet Malcolm titled 'The Journalist and the Murderer'?
Sentence (from "The Journalist and the Murderer"): The journalist in question is Joe McGinniss; the murderer is the former Special Forces captain Dr. Jeffrey R. MacDonald, who became the subject of McGinniss' 1983 book "Fatal Vision".
Relevant evidence: Yes