Thackery tries to steady his nerves as he prepares to separate conjoined twins before a packed audience, while Cornelia receives a surprise gift from her father-in-law and attends a charity ball for the new Knick. Later, Barrow rids himself of a threat; Opal puts a damper on the Robertsons' good mood; Algernon receives long-overdue recognition in the surgical theater, but complications arise.