As he embarks on a new series of conversations about Vatican II, Deacon Jean Francky Guerrier, SJ, talks with Dr. Margaret Lavin, Professor Emerita at Regis College, Toronto, and author of the book, Vatican II: Fifty Years of Evolution and Revolution in the Catholic Church. Dr. Lavin provides us with an introduction to the main elements of this important council, highlighting the theological and historical contexts and underlining the consequences of its reception.