A mole
Sam gave the sketch of the person that treated this guy to the brothel and gave the description of the place they were in. He also went back to the brothel manager to ask who that person is.
She looked at the picture and Sam noticed a flinch, but she denied seeing him before.
"Manager, I don't have time to interrogate you and make you spill the beans, the person that is asking you is not me, the young master of the Gaja Clan.
Not only is he a successor candidate, but his grandfather is also a grand elder and his father is a core elder. You know how that goes. If you don't answer me immediately, he would use extreme measures and I doubt whatever you are trying to hide would be able to save you."
She gulped down and looked nervous. She looked around trying to avoid eye contact.
At this moment, energy gathered at Sa's fingertips and a very small bullet was shot at her hand.