Nicodemus was very much in agreement with his housemate that they should find a professor. Some sort of adult who would know how to handle this. "A Patronus charm works against them," he stated though he wasn't sure if any of them were capable of it yet. After all, most fully educated adults were incapable of producing a strong one.

"Miss Bell, are you all right?" He asked in concern when the girl stumbled back. Not knowing what to do, he kicked the book with the arm away from them/