José Meirinhos, Celia López Alcade, Joao Rebalde (ed.), Secrets and Discovery in the Middle Ages. Proceedings of the 5th European Congress of the Fédération internationale des instituts d’études médiévales (Porto, 25th to 29th June 2013), Turnhout (Brepols) 2017, XV–489 p., 10 b/w ill., 10 tabl. (Textes et études du Moyen Âge, 90), ISBN 978-2-503-57745-6, EUR 65,00.