When the lich and his companions heard that Marcus had already decided to help them, the tension on all of their faces instantly vanished.
Each of them had been fearing that he would consider them too dangerous to be kept alive and decided to bring in the cavalry to destroy them.
"Of course, there is a condition for my help. You must destroy the surveillance system that you set up. That thing is far too dangerous. I know that you all are just using it to search for ways to become human again, but if at any point some one with more dangerous ambitions got access to it, the entire world could be thrown on its head." Marcus said, his tone grave.
In the wrong hands the ability to watch and hear thousands of high ranking officials and wealthy merchants could be used to incite unimaginable chaos. He could easily imagine what a powerful demon could do with it all, and it was not pretty.