This largely forgotten and most assuredly suppressed work from 1899 provides crucially important documentation on the little known but quite factual 19th-century infiltration and internal takeover of Oxford University and also the Church of England by Jesuit clerical spies and other agents of the Vatican. Walsh correctly identifies such turncoat notable clerics as Newman, Pusey, Keble, and others-the so-called "tractarian" Anglican Church leaders, as they were then called-as most likely having been Romanist assets all along.