"Yes," replied the Lieutenant, "so he told me. But he's lost a valuable letter in the hall."
"The hall? Why, there doesn't seem to be much chance of losing anything there. There are no draperies and very little furniture."
"Well, it's a queer business," admitted the officer. "But while the Colonel was telling me about your little escapade, he dropped a letter which he had taken from its envelope, and just at that moment the butler came in. He started to pick up the letter for the Colonel, but Darcy jumped forward, and so between them it was pushed under the crack of that old oak door studded with silver nails."
"A letter!" cried the Secretary. "Did you notice what it looked like?"
"No," said Kingsland incautiously, "except that it had an address scrawled across one side in pencil."
Stanley waited to hear no more. Fate seemed playing into his hands at last, and springing to the door he threw it open, and saw to his intense astonishment the figure of Colonel Darcy grovelling on the floor of the hall.
"I thought I told you to leave this house, Colonel Darcy," said Stanley, striving to be calm, but his voice quivering with suppressed emotion.
"So you did," replied his adversary, rising slowly to his feet, very red in the face and somewhat short of breath.
"Then why haven't you gone? Do you wish me to speak to Mrs. Roberts?"
"I intended to obey your request, out of respect to Miss Fitzgerald. But the fact is, I have lost an important letter."
"So Kingsland tells me, though it seems almost impossible."
"Truth, sir, is often stranger than fiction," replied the Colonel angrily, "as our own relations with each other have already proved. But, as you have given me the lie once this evening, you can, if you see fit, prove the truth of my statement by referring it to the butler."
"I gave you the lie, as you express it, Colonel Darcy," replied the Secretary, "because my own knowledge assured me, that your charges were untrue. In this case, however, I am quite ready to fully accept your statement. But it's a pure waste of time to attempt to recover your letter. For two hundred years they've tried to open that portal, and to this day it remains closed."
"The butler told me some such cock-and-bull story – but of course – "
"It's quite true."
"But I must have my letter. I must have it, I tell you – surely someone knows the secret."
"There's a legend current to the effect that the pressure of five of these silver nails, one by each of the five fingers, will suffice to open the door. But to my way of thinking it's likely to remain closed for two centuries to come."
"Curse it!" cried the Colonel, throwing himself against the portal in a frenzy. "It has neither handle nor keyhole, and it's as firm as iron! What am I to do?"
"If it's absolutely necessary to recover this document, I'll tell Mrs. Roberts. Though I should doubt if she'd consent to ruin an interesting heirloom for the sake of a gentleman against whom she already entertains a prejudice."
"I couldn't think of it. Impossible to put Mrs. Roberts to so much inconvenience; I shouldn't consider it for a moment! Let the cursed letter remain where it is!" replied the Colonel, evidently very much upset by this proposition.
"As I'd supposed, Colonel Darcy, you would prefer that the document should remain where it is, rather than it should pass, even temporarily, into any other hands than yours. Might I inquire if it's the one you received from Miss Fitzgerald."
"It is, of course, quite useless to attempt to deceive a diplomat," replied his companion, with a touch of temper which was not lost on Stanley, who answered composedly:
"I think you may be reasonably assured that your letter will never be found till you and it have long been dust, and till not only its importance, but its very meaning, have become unintelligible. You may consider it irrevocably lost, and so, as there's no further excuse for your remaining, Colonel Darcy, I'll wish you – good-night," and the Secretary threw open the great hall door.
"Good-night, Mr. Stanley," replied the unwelcome guest, with a frown of anger as he passed over the threshold. "Good-night – but not good-bye – remember we've still a score to settle."
CHAPTER XIX
A MIDNIGHT MESSAGE
Stanley closed the great front door, turned the key, shot the bolts, and lighting his bedroom candle, slowly and thoughtfully betook himself to his chamber.
Kingsland's knowledge of the mysterious letter only served to increase the Secretary's suspicions of that young officer's complicity with Darcy, while the letter itself presented such a bewildering variety of contradictory possibilities, that his mind was dazed. A further consideration of his past experiences in this matter did not make him feel any the easier, and for the first time, under the spur of doubt and mistrust, he recalled Kingsland's story of the reception of the missive, and subjected it to a critical analysis. Mr. Riddle had said, and the Lieutenant had confirmed, that the letter had been handed by the former to the latter at the Hyde Park Club, and that the Lieutenant was then "leaving the room." Yet the Secretary, now he came to think of it, was sure Mr. Riddle had not been of the company at or after dinner, and that Kingsland had not left the drawing-room or attempted to do so. Moreover, if Riddle had given him the money for the stamp, why had he not mentioned the fact at the time? The letter was evidently of importance, and intended for Darcy, a man of whose every action, he had the greatest distrust. Yet the important missive, after being lost for three days, was given by its owner to Miss Fitzgerald, who thought so little of it, that she used the envelope to scribble an address on, before giving it to the Colonel, who now had lost it under the secret door.
It was certainly a mystery to which he was unable to offer any solution, but which, nevertheless, caused him a vague uneasiness. He drew up an arm-chair beside the table, and lighting his lamp, prepared to seek distraction in a book.
The Secretary had scarcely settled to his reading, however, when he was startled by a sharp click against his window. At first he thought nothing of it, but at a repetition of the noise, plainly produced by a pebble thrown up against the glass, he opened the casement and looked out.
The night was very dark, and he could see nothing; but out of the blackness below him came a voice, which he thought he recognised, calling his name softly.
"Why, John!" he cried, scarcely believing it could be the Legation factotum. "What on earth are you doing here at this time of night?"
"Special message from 'is h'Excellency, sir," came in the familiar cockney of the messenger, with the added caution, "don't speak so loud, please – it's that private – "
Stanley nodded, quite oblivious of the fact that he was invisible, and added in lowered tones:
"Go round to the front, and I'll come down and let you in."
He cautiously made his way downstairs, pausing at every creaking board in fear that he had awakened the household, and traversing the long hall, opened the great front door, and admitted the shivering John; for the night was cool, and several hours of watching and waiting had chilled the messenger thoroughly.
"How long have you been out there?"
"Since ten, sir."
"Good Heavens! and it's past midnight! Come up to my room, and I'll give you some whiskey."
"Thank ye, sir. I shan't mind a drop – it's that cold, but I'll take off me boots first."
"Take off your boots!"
"'Is h'Excellency was most par-ti'cler, sir, as no one but you should know as I was 'ere."
"Oh, I see. Very well. Leave them at the foot of the stairs. You'll find these flags rather cold for stocking-feet."
A few minutes later John was installed in the Secretary's bedroom, and his inner man was being warmed and refreshed with a copious dram of whiskey – while Stanley, seated at his table, was breaking the seals of the despatch which the messenger had brought him.
"It's most secret, sir."
"Quite so. How did you know which was my room?"
"The lady of the 'ouse, sir, employs the hinnkeeper's daughter to 'elp the 'ousekeeper day times – and so – "
"I see; very clever, John. Eh! what's this?" and bending forward to the light he read the now opened dispatch. It was short and to the point.
"Dear Mr. Stanley," wrote the Minister. "This is to inform you that we have discovered the silent partner in the firm, who is the chief instrument in putting up the money to defeat the treaty. His name is Arthur Riddle. He is a guest of your hostess, and should be watched. Darcy left for Sussex this afternoon, presumably for your neighbourhood. Kindly report progress, if any, sending letter by John, who should return at once.
"Yours, etc.