Having heard the group leave in the middle of the night, Liam felt compelled to follow them, remembering Gunther's words to stick to them like a fly. It didn't take him long to figure out where they were going since it was a destination that the others had been to a few times. There was nowhere else to go other than the hunting forest and back down to the area of fog. The real question was why, and that's what led Liam to discover their exact location.
He hadn't done this just because Gunther asked; he was genuinely curious about what they were doing.
"What should we do with him? He's seen you open the portal," Dame asked.
Soon after, the portal actually closed right up. That was because the energy from the level 1 power stone had been used already. The portals Raze opened weren't like those of others. They weren't permanent. Seeing this, it left Liam witnessing something that he wasn't supposed to see.