This is an extensive review of a book by three German scholars on the relationship between the baptismal questions and the Old Roman Creed, which also deals with the question of the authorship of the so-called Apostolic Tradition, dwells on the origin of the second, christological baptismal question and proposes a revolutionary new theory on the origin of the so-called Old Roman Creed. While there is much food for thought here, some critical questions can also be put.