This book focuses on court procedures and due process. Joan’s prosecution was supposed to follow the rules of inquisitorial procedure, set forth by Pope Innocent III at the Fourth Lateran Council in 1215. Contrary to common understanding, these rules were intended for all crimes, not just heresy, and heresy inquisitors were not exempt from following them. The crimes they prosecuted had to be public. One must be publicly suspected by publica fama (public fame) of the publicly known crime being prosecuted before one could be legitimately summoned to trial. (NB: Publica fama does NOT refer to mala fama, general bad reputation.) Defendants also had the right to know the charges against them and to have the charges explained. They had the right to counsel; they had the right to appeal, to recuse hostile judges and witnesses, and to have counter-witnesses. Joan’s case will be compared to other trials, especially that of Jean Ségueut, which took place in Rouen just before Joan’s. The second trial in this book, the Nullity Trial, was a lawsuit brought by Joan’s mother and brothers, commissioned by the pope, suing for damages to their honor, and Joan’s honor, and its mechanisms will also be examined.