The nobles of the North had too many scandals, so it wasn't surprising that the clergy held incriminating evidence against them.
Their reputation was already tarnished, so Duke Pias didn't mind revealing a bit of their dark history. But what truly concerned him was that there's no such thing as a free lunch.
The Clergy kept talking about helping them take control of the Alpha Kingdom. That kind of selfless devotion was just a tad too much for him to swallow.
As Bishop Simon said, some things, once done, are irreversible. What they were about to do was assassinate a Monarch.
Even if they were not the main actors, merely creating an opportunity for someone from the Clergy to do it, it still amounted to regicide.
The inner turmoil this brought to any legitimate noble was immense.
The Clergy could afford not to care, as historically they had been responsible for the deaths of more than one or two Kings. They did not give a damn about the life and death of Caesar III.
