The 1st year Ravenclaw was sitting in the corner of the classroom, paying full attention to the professor in-front.

Tesija had already suspected who Thomas was nowadays, and according to that, she compared him with his past 'twin', hoping for their similarities after Hogwarts.
"My guess is, he began working at the Knockturn Alley and then gathered a group of followers."
Tesija spoke, looking at professor and the class, in a question form.