He gets suspicious

He is just about to walk away when he gets the feeling something is off. "Say," he says. "What are you studying in there anyway?" Bella tries to play it off by saying it's biology with a somewhat bored expression, but this guy isn't buying it.

He begins peering through the crack in the door, but Bella pulls it closed a bit too quickly. She looks back at him with a slightly worried expression, but the goose is already cooked. The boy yells back at the group, "she's in here!" while trying to **** himself through the doorway. Bella tries in vain to hold the door closed, but the group soon overpowers her and find the way inside the classroom.