The third person in the room was obviously Gerken, the Soul Reaper.
He was different from Lina since he had absolute confidence in his stealth capabilities.
It had been quite easy for him to follow a Law Master until the hideout of the Essence God, and he was already certain that he needed to kill them.
The only reason they were still alive was that Gerken wanted to obtain more information about them first.
Rather than killing two traitors quickly, he would rather get the identities of as many traitors as possible before killing them all.
The Law Master left the room soon after that and went to receive his reward. Gerken didn't try to follow him because he felt that the most important information should come from the Essence God.
He had already left a mark on that Law Master, so he could look for him later.
The Essence God brought out a device as soon as the Law Master left.
"Brother, how is it going on your side. I will be able to finish in a couple of weeks."