In which Lord Warburton encounters Isabel and Mr. Osmond at the opera, provoking a subtle interplay of social graces and private perplexities under the dim theatre lights, while Isabel’s composed demeanour conceals a curious kindness. Afterwards, amidst the solemn quietude of the Capitol’s ancient marbles, Isabel reflects upon the fleeting presence of others and the enduring charm of solitude, as Mr. Osmond’s discerning interest in her choices quietly intensifies.