Sign?

"If you are scared, you can cover your ears," Ethan said. "You spent five years in another world, right? How come this kind of story scares you?"

"Well, because the creatures I had to fight were just plain monsters," Emily replied. "Their big numbers were the only real issue there."

"No, I don't think I saw or heard of a different devourer," Maerys said. "They didn't need to evolve to completely wipe us out."

"Did they use magic?" Ethan asked.

"I think that legend about them mixing with the darkness is more than a legend," Maerys replied. "Some of my friends suddenly disappeared when we were escaping from the devourers in the past. I guess that is their ability."

  Shadow magic, dark magic, illusion magic… there were other possibilities, but the devourers were probably using one of those. It was the type of enemy that Ethan disliked quite a bit since, at night, they could hide for long periods of time.