Isabel laughed joyously. "That's a lovely idea," she exclaimed. "I do hope----" She was interrupted by the sudden reappearance of Bugg, who came rapidly up the staircase in the same noiseless and unexpected fashion that he had departed in. "Well?" said Tony, throwing away the stump of his cigar. "There ain't nothin' wrong abaht the wall, sir," replied Bugg cheerfully. "One can 'op over that as easy as sneezin'." "What is there the other side of it?" asked Tony. "It gives on to the back garden of the 'Ollies--that big empty 'ouse in 'Eath Street." "How very obliging of it," said Tony contentedly. He turned to Isabel. "It's no good wasting time, is it?" he added. "I think I had better go straight down and tell Mrs. Spalding what we propose to do. She ought to know something about it, just in case we have to slaughter any one on her best carpet." Isabel looked a little doubtful. "I hope she won't mind," she said. "I don't think she will," replied Tony. "I have always found her most reasonable about trifles." He turned back to Bugg. "Better find a bag or something to take with you when you go out," he added. "I want you to look as if you were on your way back to Goodman's Rest." Bugg saluted, and making his way downstairs, Tony tapped gently at what appeared to be the kitchen door. It was opened by Mrs. Spalding who at the sight of her visitor showed distinct traces of surprise and concern. "Why ever didn't you ring, Sir Antony?" she inquired almost reproachfully. "It's all right, Mrs. Spalding," he replied in his cheerful fashion. "I came down purposely because I want to have a little private talk with you." He moved aside a plate, and before she could protest seated himself on the corner of the table. "You remember what I told you a couple of days ago about the house being watched?" "Indeed yes, sir," said Mrs. Spalding. "They are still hanging about the place according to what Bugg says. I am sure I don't know what the police can be up to allowing a thing like that to go on in a respectable neighbourhood." "It's scandalous," agreed Tony warmly. "As far as I can see the only thing to do is to take the matter into our hands. The men are probably a couple of ruffians employed to watch the place by Miss Francis' guardian." Mrs. Spalding nodded her head. "I shouldn't be a bit surprised, sir. Them foreigners are up to anything." "It must be put a stop to," said Tony firmly. "Of course I could insist upon the police taking it up, but I think on the whole it would be better if we tackled the matter ourselves. One doesn't want the half-penny papers to get hold of it, or anything of that sort." "Certainly not, sir," said Mrs. Spalding in a shocked voice. "It would never do for a gentleman in your position."