Severus bit back the urge to bark out his order again; disobedience he could certainly deal with later. His mouth tightened slightly, and without replying he began trying to push his way past Draco's defenses - willing his thoughts to come to the surface, waiting for guilt, for Dumbledore, and seeking fear above all else. There was only one secret he cared for at all, and if the boy could hide that, they would be off to a very good start indeed.