"Hello again Mr Bletchley," Susan smiled pleasantly. "I hope I'm not disturbing you, but do you mind if we come in? I still have a few more questions to ask you." She was watching his body language carefully, looking to see if he had that look of a man hiding something. Well, of course he was hiding something. The reports had him tagged as a Death Eater.
He was either a damn good death eater, hiding what he did, or he was so far down the food chain of Bellatrix and Rodolphus' followers that he really did very little.
But this was a murder investigation, not death eater business.