Regarding Miss Justice's question, Klein had already considered it some time ago. After all, leaving troublesome problems to the official organizations who could resolve them was his modus operandi. However, Leonard's and Pallez Zoroast's reaction made him realize something different.
Leonard was a Red Glove of the Nighthawks. He could easily create an informant to pass the news of Amon being in Backlund to the Church of Evernight, and then let the archbishop and high-ranking deacons decide on a strategy before carrying out an operation. It wouldn't expose his problem, and it could also quash any latent troubles. Yet, he had chosen to leave using the excuse of a mission. It was obvious to Klein that Amon's appearance was tied to the reason for Leonard's choice of action.