Severus looked up to meet Rodolphus' gaze and froze in his spot, why he didn't like the atmosphere in the Lastrange's house he wasn't sure. Maybe it was Bellatrix's borderline craziness, or the fact he was an infiltrator in a pure blood filled house, one thing was sure, he was uncomfortable.
"Rodolphus." he said coldly, tilting his head in greeting, while he walked inside. He didn't look around, just ahead: "Something warm if you have..."
He turned stiffly to look at the other man, reaching out with his mind, trying to read the other's mood, he always tried legilimens when he was around Death Eaters, it'd saved him more than once. "How have you been?"