They spent the next few days before the rest of the students returned to school in their dungeon where they decided to go through the new collection of books in Hermiones bag. Draco had been right, some were outright dangerous - one seeped a type of acid when she had gone to pick it out. Malfoy had ripped it out of her hand and thrown it straight into the fireplace where it hissed loudly. He soaked her blistered hand in a bowl of dittany and didn't let her remove it for a whole hour.