Well, it turns out The Blue Dragon is a jazz club rather than anything more notorious, but Rose is indeed there, dancing and giggling and carrying on with the man from Warwick Square when her three captors enter the club. Matthew remarks that it's like the outer circle from Dante's Inferno and Rosamund is like, "The outer circle?" I mean, it actually does look pretty fun, but I can understand why they're all in no mood. They catch sight of Rose, and Rosamund supposes her dance partner -- who by the way is considerably older -- is "the friend she spent two hours with in Warwick Square." So Rosamund was doing the math, too. When the band wraps up the song they're on, Rose and "friend" sit back at their table and make out, but Rosamund leads the way over and when Rose sees the group come to fetch her, she practically jumps out of her skin, while Rosamund provides a welcome contrast by being entirely composed as she introduces herself as a cousin of Rose's mother to the "friend." Matthew gives Rosamund a proper introduction and Rose recovers enough to tell them her "friend" is "Terence Margadale," who invites them all to sit. As she complies, Rosamund smoothly asks where Mrs. Margadale is and Terence gets halfway through his explanation of her being in the country before realizing how deeply he's stepped in it, and Rose tries to babble how Terence used to work for her father so he's more of a family friend, but Matthew grabs Rose and leads her to the dance floor. He may sometimes be a clod, but I do respect his ability to decide when he's had enough bullshit for one day.