(Continued from page 39.)

The children had all been so intent on the going in or staying out, that they had not noticed how the door was slowly but surely closing on them. No one had touched it, yet it was moving with great force. Marjorie ran back out of the way with Georgie clinging to her arm. Alan, seizing Estelle's hand, had barely time to stumble over the threshold when a heavy bit of wood was hurled over him, just missing his head, and landing on the threshold he had quitted the moment before. On this the door banged with a great crash. It had fallen just in time to prevent the door shutting. The whole building seemed to shake with the shock of the banging door. Alan turned, to see Thomas, white and staring, behind him. The expression on his face recalled to the boy's mind the conversation in the hollow. For the moment, however, anger prevented any other thoughts.

'It might have killed me!' he exclaimed, angrily. 'What on earth did you do that for?'

'I meant no harm, sir,' returned Thomas, hurriedly. 'The truth is, sir, I—I want to get into that place for a bit. I—I have left something behind. It's most important. The noise may bring Mr. Peet up here, and—and—I must get in afore he comes. What's there was left by—by mistake, sir—only a mistake.'

Thomas spoke in a confused, anxious manner, all the time edging nearer to the door. 'It would have slammed if I hadn't thrown in the bit of wood,' he continued, as he pushed back the door to its widest extent.

Sure as he felt that Thomas was deceiving him, Alan was puzzled how to connect the gardener's anxiety to enter the summer-house with the conversation he had overheard; but that it had some connection he felt certain. What could the man want in that dark, uninviting hole? Had he stolen any valuables and hidden them in there? If so, why did he want information about them when he must know all about where they were to be found? Yet the stranger had told Thomas to obtain information, without which their bargain was useless.

His thoughts were interrupted by the gardeners, who now came running up, headed by Peet. They were amazed to see the four children staring in wonder at the strength displayed by Thomas as he set the massive door open.

'What are you doing with that 'ere door?' shouted the angry head gardener. 'Who opened it? It isn't anybody's business to go nigh it at all.'

'The door nearly slammed on the young ladies and gentlemen,' replied Thomas, sullenly, his tone proving to Alan how keen was his disappointment. 'I just threw the wood in time to stop it.'

'Who opened it?' demanded Peet, sternly, his eyes wandering round the group of children and gardeners.

No one answering, Alan said they had found the door open on their return from boating, and had looked in. 'And if we ever get the chance again we will go right in,' he added, sulkily, walking away with his head in the air. His disappointment made him forget himself.

'Stop, Master Alan,' returned Peet, whose naturally cross temper was continually bringing him into collision with the children. 'The Colonel and my lady have forbidden all you young ladies and gentlemen to go into the ruin, and you tell me you will get in if you have the chance?'

'Yes, Peet, I do,' replied Alan, haughtily. 'I am not accountable to you for what I do or don't do. You mind your own affairs, and find out who left the door open, or else you will be held responsible.'

Alan marched off, leaving Peet speechless with rage.

'I will speak to the Colonel,' he muttered to himself as the children disappeared in the direction of the house.

No one knew anything about the door, and, in spite of his anger, Peet was obliged to admit he himself must have left it open, since none of the under-gardeners could have got possession of the key. As far as he knew, they had no interest in going in. The ruin was only used by him for a secret purpose of his own of which he had spoken to no one. On one occasion alone had he ever allowed any of his underlings into it. That was on the day he had made Thomas assist him in erecting some woodwork in preparation for a gift he had received from his brother in India, which he desired to keep a profound secret from everybody. Inside the ruin was a recess large enough for his purpose; but it required a good deal of adapting to make it available, and this he could not manage without help. Thomas's action in throwing the piece of wood might or might not be regarded as suspicious, but since he had been out boating with the children, he could not have had anything to do with opening the door. He might desire to get in if his curiosity about the woodwork in the recess had been roused, but was that likely in such a stupid lout as Thomas?

There really appeared to be no one on whom he could visit his wrath. Dismissing the under-gardeners curtly, he was forced to return to his work in a very unenviable frame of mind, suspicious of everybody.

Meantime the children were greatly taken aback by the quarrel between Alan and Peet. The two were always more or less at daggers drawn, but it was seldom that the mutual dislike blazed up into open war.

'I will show Peet a thing or two,' cried Alan with a wilful smile. 'He must learn he can't speak to me like that. He is Aunt Betty's servant, worse luck. If he had been Father's, I'd have been down on him with a vengeance.'

'It is a great pity to quarrel with him,' said Marjorie, though she knew the remark was not a wise one under the circumstances. 'He is an old man, he's seen heaps of trouble, and he's soured. That is what Aunt Betty says. I think it would be nicer—- more like what one would call noblesse oblige—if we let him alone.'

'There's Father!' cried Georgie with a shout. 'We can ask him.'

(Continued on page 50.)