"Hmm." A small nod, thinking on it. "Defensive spells. Protection spells. Detection charms. Sound good?" He gave a warm expression, then offered his arm over. "We won't be able to do anything here, but I know somewhere we can go. Tonks won't have to wait up for us, but she knows we'll be out late." A subtle hint that Tonks was aware of what Remus planned to do.