In "Catechism," Batman heads to Rome to stop Ra s al Ghul and the League of Assassins from getting their hands on an ancient artifact that they want to use to increase the power of the Lazarus Pits. What Batman doesn t know is that the artifact is already under the protection of the Order of St. Dumas, specifically Azrael! From the creative team of critically acclaimed writer Brandon Easton and rising-star artist Karl Mostert!