Marcus has gleaned enough about the shining from Dan to have a general idea what he's talking about, and he knows Dan and Kat have met before this, so he thinks she knows enough to understand what he's getting at, too. All the people who were taken have something special. Something these creatures clearly don't like.

"There was a fire in another room," he says to Kat, not quite looking at Dan as he cleans his neck. "It looked almost like a kitchen. Like they were preparing a meal."

He doesn't want to think about what that might mean. About what it could have meant for Dan if he hadn't found him. What it might still mean for others.