The manager of the new Imperial Restaurant on the Thames Embankment went into his luxurious private office and shut the door. Having done so, he first scratched his chin reflectively, and then took a letter from the drawer in which it had reposed for more than two months and perused it carefully. Though he was not aware of it, this was the thirtieth time he had read it since breakfast that morning. And yet he was not a whit nearer understanding it than he had been at the beginning. He turned it over and scrutinised the back, where not a sign of writing was to be seen; he held it up to the window, as if he might hope to discover something from the watermark; but there was evidently nothing in either of these places of a nature calculated to set his troubled mind at rest. Then, though he had a clock upon his mantelpiece in good working order, he took a magnificent repeater watch from his waistcoat pocket and glanced at the dial; the hands stood at half-past seven. He immediately threw the letter on the table, and as he did so his anxiety found relief in words. "It's really the most extraordinary affair I ever had to do with," he remarked to the placid face of the clock above mentioned. "And as I've been in the business just three-and-thirty years at eleven a.m. next Monday morning, I ought to know something about it. I only hope I've done right, that's all." As he spoke, the chief bookkeeper, who had the treble advantage of being tall, pretty, and just eight-and-twenty years of age, entered the room. She noticed the open letter and the look upon her chief's face, and her curiosity was proportionately excited. "You seem worried, Mr McPherson," she said tenderly, as she put down the papers she had brought in for his signature. "You have just hit it, Miss O'Sullivan," he answered, pushing them farther on to the table. "I am worried about many things, but particularly about this letter." He handed the epistle to her, and she, being desirous of impressing him with her business capabilities, read it with ostentatious care. But it was noticeable that when she reached the signature she too turned back to the beginning, and then deliberately read it over again. The manager rose, crossed to the mantelpiece, and rang for the head waiter. Having relieved his feelings in this way, he seated himself again at his writing-table, put on his glasses, and stared at his companion, while waiting for her to speak.