Death in a White Tie by Ngaio Marsh

the blue sofa. Lord Robert moved aside and she at once sat down, spreading her furs.
    “I must find my seat,” said Davidson. “They are going to begin.”
    He went to a chair beside Lady Carrados on the far side of the room. Mrs Halcut-Hackett asked Lord Robert if he did not think Sir Daniel a delightful personality. He noticed that her American accent was not quite so strictly repressed as usual and that her hands moved restlessly. She motioned him to sit on her right.
    “If you don’t mind,” he said, “I’ll stick to my chair. I like straight backs.”
    He saw her glance nervously at his chair which was a little behind the left arm of the sofa. Her bag was on her lap. It was a large bag and looked well filled. She settled her furs again so that they fell across it. Lord Robert perched on his hideously uncomfortable chair. He noticed that Dimitri had sat down at the end of a row of seats close by. He found himself idly watching Dimitri. “Wonder what he thinks of us. Always arranging food for our parties and he could buy most of us up and not notice it, I shouldn’t mind betting. They
are
rum hands and no mistake. The little finger’s the same length as the third.”
    A flutter of polite clapping broke out and the Sirmione String Quartette walked on to the dais. The concealed lights of the concert chamber were dimmed into darkness, leaving the performers brilliantly lit. Lord Robert experienced that familiar thrill that follows the glorious scrape of tuning strings. But he told himself he had not come to listen to music and he was careful not to look towards the dais lest his eyes should be blinded by the light. Instead he looked towards the left-hand arm of the blue sofa. The darkness gradually thinned and presently he could make out the dim sheen of brocade and the thick depth of blackness that was Mrs Halcut-Hackett’s furs. The shape of this blackness shifted. Something glinted. He bent forward. Closer than the exquisite pattern of the music he caught the sound made by one fabric rubbed against another, a sliding rustle. The outline of the mass that was Mrs Halcut-Hackett went tense and then relaxed. “She’s stowed it away,” thought Lord Robert.
    Nobody came near them until the lights went up for the interval and then Lord Robert realized how very well the blackmailer had chosen when he lit upon the blue sofa as a post-box, for the side door beyond it was thrown open during the interval and instead of going out into the lounge by the main entrance many people passed behind the blue sofa and out by this side door. And as the interval drew to a close people came in and stood behind the sofa gossiping. Lord Robert felt sure that his man had gone into the lounge. He would wait until the lights were lowered and come in with the rest of the stragglers, pass behind the sofa and slip his hand over the arm. Most of the men and many of the women had gone out to smoke, but Lord Robert remained uncomfortably wedded to his chair. He knew very well that Mrs Halcut-Hackett writhed under the pressure of conflicting desires. She wished to be alone when the bag was taken and she dearly loved a title. She was to have the title. Suddenly she murmured something about powdering her nose. She got up and left by the side door.
    Lord Robert rested his head on his hand and devoted the last few minutes of the interval to a neat imitation of an elderly gentleman dropping off to sleep. The lights were lowered again. The stragglers, with mumbled apologies, came back. There was a little group of people still standing in the darkness behind the sofa. The performers returned to the dais.
    Someone had advanced from behind Lord Robert and stood beside the sofa.
    Lord Robert felt his heart jump. He had placed his chair carefully, leaving a space between himself and the left-hand arm of the sofa. Into this space the shadowy figure now moved. It was a man. He stood with his back to the lighted dais and he seemed to lean forward a little as