Hermione's head snapped up at the outburst. Madame Pince had taken care of the volume issue, but Hermione remained curious; it was unlike Percy to speak so loudly in the library, he always seemed so calm and composed.
Curious, Hermione closed the book she had been reading and walked over to their table.
"I'm sorry, I don't want to intrude... but maybe I can help," she whispered. "Can I join you?"