In the mid-1990s, a clandestine group of high-ranking churchmen began gathering in St. Gallen, Switzerland. Opposed to Cardinal Joseph Ratzinger, the circle plotted a revolution in stealth.

By 2015, their secret ached to be told. Before an audience, Cardinal Godfried Danneels joked of being a part of a "mafia." But as explosive as Danneels's confession was, a thick cloud of mystery still enshrouds the St. Gallen mafia.