Seamus' suspicions got a little more focused as the stranger approached the forest. Now why would anyone want to walk down to the edge of the woods in a high risk time like this? Part of him wanted to confront this guy, but the other part wanted to see where this was going. But Seamus wasn't one for patience, and he was fairly certain the stranger knew he was being followed. What would be the point in waiting around?
He continued following, a little more on edge as they closed in to the trees. Somewhere in there was a murderer, waiting to do something probably unimaginable to one of the students. Possibly more than one as well after that break out... It occurred to him that if Roth entered the trees it would only take a few seconds before he could probably escape Seamus' eyeline and he'd lose track of him. Better not to let him get away...
"Lost something?" He called to Roth, not bothering to mask his mistrust. He shoved his free hand into his pocket with his wand, just in case, and took a long drag on his cigarette.