The question of the reality of Cathars and other heresies is debated in this provocative collection.

Questions about the Cathars - Antonio Sennis
The Paradigm of Catharism; or, the Historians' Illusion - Mark Pegg
The Cathar Middle Ages as a Methodological and Historiographical Problem - John H Arnold
The Heretical Dissidence of the 'Good Men' in the Albigeois [1276-1329]: Localism and Resistance to Roman Clericalism - Julien Théry-Astruc
The Heretici of Languedoc: Local Holy Men and Women or Organized Religious Group? New Evidence from Inquisitorial, Notarial and Historiographical Sources - Jörg Feuchter
Cathar Links with the Balkans and Byzantium - Bernard Hamilton
Pseudepigraphic and Parabiblical Narratives and Elements in Medieval Eastern Christian Dualism and Their Implications for the Rise and Evolution of Catharism - Yuri Stoyanov
The Cathars from Non-Catholic Sources - David d'Avray
Converted-Turned-Inquisitors and the Image of the Adversary: Ranier Sacconi Explains Cathars - Caterina Bruschi
The Textbook Heretic: Moneta of Cremona's Cathars - Lucy Sackville
'Lupi rapaces in ovium vestimentis': Heretics and Heresy in Papal Correspondence - Rebecca Rist
Looking for the 'Good Men' in the Languedoc: an alternative to 'Cathars'? - Claire Taylor
Principles at Stake: The debate of April 2013 in retrospect - R I Moore
Goodbye to Catharism? - Peter Biller