"Exactly and that is just common sense," Lucius said nodding. "You would never do something like that." Of course that could be because Draco was his son that he blieved that but it did make a lot of sense. Draco just wouldn't do that, everyone should realise that.
"I'm glad to hear that, I don't wany anything to happen to you," he told Draco truthfully. "We'll catch you did this, don't worry about it."