One of the horse-hair sofas had been drawn to the fire, and Mrs. Pentreddle lay thereon, with her hard black eyes fixed on the leaping flames. Outside, the night was chilly and damp, the air was thick with fog, and even in the drawing-room could be heard the dripping of water from the ivy clothing the surrounding wall. In spite of its being in London, the house was markedly isolated, and only occasionally did a policeman venture down the curved cul de sac. But within, all was shabbily warm and comfortable, and Mrs. Pentreddle's grim face relaxed into more pleasant lines. Nothing could be heard but the dripping of the water, the ticking of the clock and the occasional fall of a morsel of coal from the grate. But shortly the almost silence became oppressive, and Mrs. Pentreddle spoke in her harsh voice.
"It's very kind of you to stay with me, Miss Carrol," she said, glancing sideways at her companion; "few young ladies would do that when a theatre-treat is offered to them."
The girl addressed raised her eyes from the evening paper which she had been reading and smiled. Patricia Carrol's smile was delightful, and displayed such white teeth that her beauty was enhanced. But even when her face was in repose, she looked an extremely pretty girl, and was one of those richly-coloured Irish brunettes, who remind the observer of a peach ripening against a mellow brick wall. Her hair was bluish black, of a wavy quality which lent itself admirably to the style of coiffure which she affected, and her eyes were sea-blue, of that wonderful Irish tint which goes so well with dark tresses. Her admirable figure was clothed plainly, but tastefully, in a Prussian blue serge dress, perfectly cut, and worn with a charming natural grace. Her hands and feet were slim and aristocratic, and her whole air was one of repose and good-breeding. She was a flower of civilization, and should have bloomed amidst more fitting surroundings than the shabby drawing-room could afford. Yet she was only a poor little governess seeking for employment, and even when Mrs. Pentreddle spoke to her, she had been searching the columns of the newspaper in the hope of finding a situation.
"Oh, I am very pleased to stay with you, Mrs. Pentreddle," she said, with her charming smile. "I have too many troubles to care about going to a play. I would only take them with me, and then would scarcely enjoy the performance."
"That is true," replied the elder woman, examining the girl closely; "and yet you should have no troubles at your age and with your looks."
Patricia coloured and shook her head. "My looks are really against me," she said, somewhat sadly; "ladies don't like to engage me on that account. If I were ugly and old I should be better able to get what I want."
"What do you want, Miss Carrol?" asked Mrs. Pentreddle, abruptly.
"Fifty pounds a year as a nursery governess if I can get it," replied the girl promptly, "or even thirty, so long as I can get a situation. If it were not for dear, kind Mrs. Sellars I don't think I could hold out. She's an angel, and lets me stay here for ten shillings a week until I can get something to do. Bless her!"
"How did you come to this?" asked Mrs. Pentreddle, still abruptly.
Miss Carrol coloured, for she did not like to whimper about her misfortunes to strangers. "It's a long story," she said evasively; "all you need know is that my father was a Colonel in the army, and that when he died his pension ceased and I was left penniless. But I have had a good education, and I hope to get a situation as a governess."
"Won't your friends assist you?"
"I have no friends," said the girl simply; "when I left the world I was brought up in, I left my friends for ever."
"I don't think so; you will go back to them some day," said Mrs. Pentreddle encouragingly, although the expression of her iron face did not soften; "but, meanwhile, if you wish to earn a five-pound note----" she hesitated.
The newspaper slipped from Patricia's lap to the ground and she looked surprised. "I don't understand!"
"If you will do an errand for me I will give you five pounds."
"Oh, I can do an errand for you without taking money."
"I don't ask-you to: this is rather a dangerous errand. But I think you are brave, and I know that you are hard up----"
Patricia interrupted. "I have enough money to go on with," she said, flushing.
"At ten shillings a week!" retorted Mrs. Pentreddle, unpleasantly. "Well, please yourself!"--she turned over on the sofa--"I have given you the chance."
Miss Carrol thought hard during the silence which ensued. Certainly, in her pauper condition, five pounds would be a god-send, and, as she had determined to lay aside all pride when she gave up the position to which her birth entitled her, she considered that she might as well take what she could get at this difficult stage of her fortunes. For five pounds she would do much, but---- "Is the errand an honest one?" she asked suddenly with a catch in her voice. The thought had just struck her.
"Perfectly honest," said Mrs. Pentreddle coldly. "What is there about me that you should think me capable of asking you to do something wrong?"
"Nothing at all," confessed Miss Carrol frankly; "but if you wish me to go on a mysterious errand, it is only natural that I should desire to hear everything about it."
Mrs. Pentreddle carefully lowered her injured foot to the ground, and sitting up very straight, folded two thin hands on her lap. "You shall hear," said she quietly, "only I must request you to keep your own counsel."
Patricia nodded. "That goes without the saying," was her answer, and she again wondered if the five pounds could be earned honestly.
"I came up to London to go on this errand myself," explained the old lady slowly, "but this sprain has prevented my keeping an appointment which must be kept to-night. As the matter is important, I am willing to pay you the money on your return with It."
"It? What is 'It'?"
"A small deal box you can easily carry in your hand. A man will give it to you if you will stand at nine o'clock by the right-hand corner of that bridge which crosses the Serpentine. On this side, remember, before you cross the bridge. Nine o'clock, and you must hold this"--she fished amongst the cushions of the sofa and produced a small bull's-eye lantern, the glass of which was pasted over with red paper. "This is the signal."
"The signal?" echoed Miss Carrol, rather nervously, for all this mystery did indeed hint at something criminal.
"Oh, you needn't turn so white," said Mrs. Pentreddle scornfully. "What I ask you to do is perfectly straightforward. There is nothing wrong about it."
Patricia still hesitated, vaguely afraid to be implicated in such unusual doings. "If you will explain further, Mrs. Pentreddle----"
"There is nothing more need be explained just now," interrupted the other woman imperiously; "when you return with the box, you shall know all. What I am requesting you to do can harm no one, but can benefit someone."
"Yourself?"
"No! That is, in a way, perhaps. But you can judge for yourself when I am able to tell you my reason. That will be when you return. If five pounds is not sufficient, I can give you ten, although I can ill afford it."
"I am satisfied with five," said Patricia quickly, and flushing