Who was the man in attendance on her--the man whom I had seen sitting behind her, and talking familiarly over her shoulder? While I paced backward and forward before the door, that one question held possession of my mind, until the oppression of it grew beyond endurance. I went back to my friends in the box, simply and solely to look at the man again. What excuses I made to account for my strange conduct I cannot now remember. Armed once more with the lady's opera-glass (I borrowed it and kept it without scruple), I alone, of all that vast audience, turned my back on the stage, and riveted my attention on the gallery stalls. There he sat, in his place behind her, to all appearance spell-bound by the fascinations of the graceful dancer. Mrs. Van Brandt, on the contrary, seemed to find but little attraction in the spectacle presented by the stage. She looked at the dancing (so far as I could see) in an absent, weary manner. When the applause broke out in a perfect frenzy of cries and clapping of hands, she sat perfectly unmoved by the enthusiasm which pervaded the theater. The man behind her (annoyed, as I supposed, by the marked indifference which she showed to the performance) tapped her impatiently on the shoulder, as if he thought that she was quite capable of falling asleep in her stall. The familiarity of the action--confirming the suspicion in my mind which had already identified him with Van Brandt--so enraged me that I said or did something which obliged one of the gentlemen in the box to interfere. "If you can't control yourself," he whispered, "you had better leave us." He spoke with the authority of an old friend. I had sense enough left to take his advice, and return to my post at the gallery door. A little before midnight the performance ended. The audience began to pour out of the theater. I drew back into a corner behind the door, facing the gallery stairs, and watched for her. After an interval which seemed to be endless, she and her companion appeared, slowly descending the stairs. She wore a long dark cloak; her head was protected by a quaintly shaped hood, which looked (on _her_) the most becoming head-dress that a woman could wear. As the two passed me, I heard the man speak to her in a tone of sulky annoyance. "It's wasting money," he said, "to go to the expense of taking _you_ to the opera." "I am not well," she answered with her head down and her eyes on the ground. "I am out of spirits to-night." "Will you ride home or walk?" "I will walk, if you please." I followed them unperceived, waiting to present myself to her until the crowd about them had dispersed. In a few minutes they turned into a quiet by-street. I quickened my pace until I was close at her side, and then I took off my hat and spoke to her.