Malcolm's example was the popular non-fiction writer Joe McGinniss, author of "The Selling of the President 1968", among others; while researching his non-fiction, true crime book "Fatal Vision", McGinniss lived with the defense team of former Green Beret doctor Jeffrey MacDonald, then on trial for the 1970 murders of his two daughters and pregnant wife. In the published "Fatal Vision", McGinniss concluded that MacDonald was a sociopath and had been unbalanced by amphetamines when he slew his family. McGinniss drew upon the work of the social critic Christopher Lasch to construct a portrait of MacDonald as a "pathological narcissist".