"The necklace. It’s apparently quite expensive, so Parkinson put a tracking spell on it assuming you’d lose it. Wherever you are is unplottable, so I can’t find you this way but it does allow me to slip into your mind easier because I have something tangible to connect to. Voldemort used to focus on Harry’s wand core. Not to cause less pain to Harry of course, but to reduce the amount of magic consumed on his part. Do you remember what you did yesterday?" Hermione had looked at the dream version of Draco for long enough. The longer she looked at him the more she noticed the imperfection, and she could feel her heart rate increasing with each one. 