The scholarly consensus, by far, is that the Roman Church in the early second century *did not* have a single bishop but was ruled by a collection of presbyteral bodies. This would seem to undercut the Catholic Church’s claim that the pope is the successor of St Peter, let alone Vatican 1’s teaching on papal infallibility.   Drawing upon their work in previous episodes, and a careful examination of the ancient sources, the Brothers present an alternative thesis which challenges the prevailing narrative of Protestant and secular scholars.