The records of medieval inquisition are best known via Emmanuel Le Roy Ladurie's Montaillou (1978), which filleted the registers of the inquisitor Jacques Fournier to produce a microhistory of an early fourteenth-century Pyrenean village. The Fournier registers are extraordinary; but the brightness with which Montaillou shone has somewhat obscured other fascinating sources. In this edition we are given a much less well-known set of records, the product of investigations by the inquisitors Pons of Parnac and John of St Pierre. As is the case with many of the thirteenth-century inquisitorial records, the original documents are lost and this edition is necessarily based upon seventeenth-century copies from the Collection Doat, housed in the Bibliothèque nationale in Paris (specifically, Doat 25 and the first seventy-eight folios of Doat 26). If not quite as full to the brim with life as the Fournier registers, these are none the less amazing sources. We find fugitive Cathars, hiding out in woods and cellars, disseminating their faith, to an often questioning or even argumentative laity. There are various vivid moments: the heretic Bernard Faure throws two pennies onto the ground, for children to scoop up; a crowd hurls sticks and stones into a chaplain's house, to prevent him coming out and disrupting the heretication of someone on their deathbed; Raymond of Pouts admits that he had read auguries for a variety of important people, including the bishops of Carcassonne and Toulouse, two abbots and Guy Foulques, archbishop of Narbonne and later Pope Clement iv. We several times see people in trouble with inquisitors because of scepticism and a lack of faith, rather than specifically heretical beliefs; and we are shown something of a cross-section of Languedocian society, from the noble household to the field labourer – and in particular a number of literate notaries. This edition and translation is hugely welcome. The translation makes the material teachable, and, as important, browsable for historians who do not want to immerse themselves in the topic but who would benefit from a greater sense of how inquisition actually operated, and what kinds of material it produced. And this is a scholarly edition par excellence: the actual text is preceded by over a hundred pages of discussion, setting the material into its historical context and discussing in fine detail the technical issues it throws up. The edition finishes with two massive indices, of places and people; a major undertaking, and great boon to specialist scholarship in the area, which will now find it much easier to undertake further prosopographical and comparative work. Biller, Bruschi and Sneddon are to be congratulated, and warmly thanked; this is a massive book, a huge labour and a great gift to other scholars.