Research that went into this book is absolutely stunning. Maciejko, who had earlier published several articles on Frankism, is considered one of the most promising young researchers of Israel's leading academic institution, the Hebrew University of Jerusalem. He juxtaposes rabbinic accounts of Frankism (in Hebrew and Aramaic), internal Frankist documents (in Hebrew, Yiddish, and Polish), official documents of the Catholic Church (in Latin, Italian, and French), and accounts of contemporary observers (in German, Polish, Russian, French etc). A lot of material comes from obscure archives in Poland and the Czech Republic or from the Vatican Secret Archives, to which very few Jewish researchers have ever gained access. Most of it has never been used by scholars.
The result is a beautifully written book telling one of the wildest stories in Jewish history. It combines a breathtaking reconstruction of the history of the Frankist movement with in-depth analyses of Frank's theological doctrines (which include the identification of the Shekhinah, the feminine principle of Judaism, with the Christian concept of the Virgin Mary). It gives a completely new perspective on what we knew (or what we thought we knew) about the history of European Jewry in pre-modern times. It covers such topics as Jewish sects and heresies, internal machinations of the Catholic Church, blood libels, Jewish conversions to Christianity and Islam, advancement of the Jews into the world of European aristocracy, interactions between Frank and his followers with secret societies of the Age of Enlightenment. 'The Mixed Multitude' is written by an academic scholar, but it reads like a gripping crime-story.
Someone should make a movie out of this book!