As far as I see the book is quite comic:
"Before the onset of the Second Vatican Council, Malachi became an aide to the German Jesuit Cardinal Augustin Bea. Malachi told me although Cardinal Bea was considered a “liberal” at the Second Vatican Council, compared to theologians and clergy of the 1990s, Bea would today be on the same conservative ideological wavelength as Cardinal Ratzinger"
And not a word about Abraham Joshua Heschel with whom Martin used to have a schmontzes time in yiddish. I am disappointed.
Malachi Martin - a laicized Jooish spy, a blasphemer and a marriage breaker. These are the basic, verifiable facts.
The video would answer your presuppositions which I also had before 1 got those informations. Have a look on the question of credibility of those informers..