Sooty had no time to hurry down the stairs. All he could do was to squeeze into a niche, and hope that the person would not see him or touch him as he went by. The moon went behind a cloud at that moment, and Sooty was thankful to know he was hidden in black shadow. Someone came down the stairs and actually brushed against Sooty's arm.

  Sooty jumped almost out of his skin, expecting to be hauled out of his niche. But the person did not seem to notice, and went on down the spiral stairway, walking softly.

  Sooty did not dare to go down after him, for he was afraid the man would come out, and cast his shadow down for the signaller to see.

  So he stayed squeezed in his niche, hoping that Julian and Dick were well-hidden, and would not think it was he, Sooty, who was walking down the stairs!

  Julian and Dick heard the soft footsteps coming, and thought at first it was Sooty. Then, not hearing his whisper, they stiffened behind the curtains, guessing that it was the signaller himself who was walking by!

  'We'd better follow him!' whispered Julian to Dick. 'Come on. Quiet, now!'

  But Julian got muddled up with the great curtains, and could not seem to find his way out. Dick, however, slipped out easily enough, and padded after the disappearing person. The moon was now out again, and Dick could catch glimpses of the signaller as he went past the moonlight streaks. Keeping well in the shadows himself, he darted quietly after him. Where was he going?

  He followed him across the landing to a passage. Then across another landing and up the back-stairs! But those led to the staff bedrooms. Surely the man was not going there?

  Dick, to his enormous surprise, saw the person disappear silently into Block's bedroom. He crept to the door, which had been left a little ajar. There was no light in the room except that of the moon. There was no sound of talking. Nothing at all except a creak which might have come from the bed.

  Dick peeped in, full of the most intense curiosity. Would he see the man waking up Block? Would he see him climbing out of the window?

  He stared round the room. There was no one there at all, except Block lying in bed. The moonlight lit up the corners, and Dick could quite plainly see that the room was empty. Only Block lay there, and, as Dick watched, he heard him give a sigh and roll over in bed.

  'Well! That's the queerest thing I ever saw,' thought Dick, puzzled. 'A man goes into a room and completely disappears, without a single sound! Where can he have gone?'

  He went back to find the others. Sooty by this time had crept down the spiral staircase and had found Julian, who had explained that Dick had gone to follow the queer signaller.

  They went to find Dick, and suddenly bumped into him, creeping along quietly in the darkness. They all jumped violently, and Julian almost cried out, but stifled his voice just in time.

  'Golly! You gave me a scare, Dick!' he whispered. 'Well, did you see who it was and where he went?'

  Dick told them of his queer experience. 'He simply went into Block's room and vanished,' he said. 'Is there any secret passage leading out of Block's room, Sooty?'

  'No, none,' said Sooty. 'That wing is much newer than the rest of the house, and hasn't any secrets in at all. I simply can't imagine what happened to the man. How very queer! Who is he, and why does he come, and where on earth does he go?'

  'We really must find out,' said Julian. 'It's such a mystery! Sooty, how did you know there was signalling going on from the tower?'

  'Well, some time ago I found it out, quite by accident,' said Sooty. 'I couldn't sleep, and I went along to that funny little box-room place, and ferreted about for an old book I thought I'd seen there. And suddenly I looked up at the tower, and saw a light flashing there.'

  'Funny,' said Dick.

  'Well, I went along there at night a good many times after that, to see if I could see the signals again,' said Sooty, 'and at last I did. The first time I had seen them there was a good moon, and the second time there was, too. So, I thought, next time there's a moon, I'll creep along to that old box-room and see if the signaller is at work again. And sure enough he was!'

  'Where does that window look out on, that we saw the light flashing from?' asked Julian, thoughtfully. 'The seaward side - or the landward?'

  'Seaward,' said Sooty at once. 'There's something or someone out at sea that receives those signals. Goodness knows who.'

  'Some kind of smugglers, I suppose,' said Dick. 'But it can't be anything to do with your father, Sooty. I say - let's go up into the tower, shall we? We might find something there - or see something.'

  They went back to the spiral staircase and climbed up to the tower-room. It was dark, for the moon was behind a cloud. But it came out after a while, and the boys looked out of the seaward window.

  There was no mist at all that night. They could see the flat marshes stretching away to the sea. They gazed down in silence. Then the moon went in and darkness covered the marsh.

  Suddenly Julian clutched the others, making them jump. 'I can see something!' he whispered. 'Look beyond there. What is it?'

  They all looked. It seemed like a tiny line of very small dots of light. They were so far away that it was difficult to see if they stayed still or moved. Then the moon came out again, flooding everywhere with silvery light, and the boys could not see anything except the moonshine.

  But when the moon went in again, there was the line of tiny, pricking lights again! 'A bit nearer, surely!' whispered Sooty. 'Smugglers - coming over a secret path from the sea to Castaway Hill! Smugglers!'

  Chapter Ten

  TIMMY MAKES A NOISE

  THE three girls were very excited the next day when the boys told them their adventure of the night before.

  'Gracious!' said Anne, her eyes wide with surprise. 'Who can it be signalling like that? And wherever did he go to? Fancy him going into Block's room, with Block there in bed!'

  'It's very peculiar,' said George. 'I wish you had come and told me and Anne.'

  'There wasn't time - and anyway, we couldn't have Timmy about at night. He might have flown at the signaller,' said Dick.

  'The man must have been signalling to the smugglers,' said Julian, thoughtfully. 'Let me see - probably they came over from France in a ship - came as near to the marsh as they could - waited for a signal to tell them that the coast was clear - probably the signal from the tower - and then waded across a path they knew through the marsh. Each man must have carried a torch to prevent himself from leaving the path and falling into the marsh. No doubt there was someone waiting to receive the goods they brought - someone at the edge of the marsh below the hill.'

  'But who?' said Dick. 'It can't have been Mr Barling, who, Sooty says, is known to be a smuggler. Because the signal lights came from our house, not his. It's all very puzzling.'

  'Well, we'll do our best to solve the mystery,' said George. 'There's some queer game going on in this very house, with or without your father's knowledge, Sooty. We'll keep a jolly good lookout and see if we can find out what it is.'

  They were at breakfast alone, when they discussed the night's adventure. Block came in to see if they had finished at that moment. Anne did not notice him.

  'What does Mr Barling smuggle?' she asked Sooty. Immediately she got a hard kick on her ankle, and stared in pain and surprise. 'Why did you...?' she began, and got another kick, harder still. Then she saw Block.

  'But he's deaf,' she said. 'He can't hear anything we say.'

  Block began to clear away, his face as usual showing no expression. Sooty glared at Anne. She was upset and cross, but said no more. She rubbed her bruised ankle hard. As soon as Block went out of the room she turned on Sooty.

  'You mean thing! You hurt my ankle like anything! Why shouldn't I say things in front of Block? He's quite deaf!' said Anne, her face very red.

  'I know he's supposed to be,' said Sooty. 'And I think he is. But I saw a funny look come over his face when you asked me what Mr Barling smuggled - almost as if he had heard what you said, and was surprised.'

  'You
imagined it!' said Anne, crossly, still rubbing her ankle. 'Anyway, don't kick me so hard again. A gentle push with your toe would have been enough. I won't talk in front of Block if you don't want me to, but it's quite plain he's as deaf as a post!'

  'Yes, he's deaf all right,' said Dick. 'I dropped a plate off the table yesterday, by accident, just behind him, and it smashed to bits, if you remember. Well, he didn't jump or turn a hair, as he would have done if he could have heard.'

  'All the same - I never trust Block, deaf or not,' said Sooty. 'I always feel he might read our lips or something. Deaf people can often do that, you know.'

  They went off to take Timmy for his usual morning walk. Timmy was quite used to being shut in the laundry basket by now, and lowered into the pit. In fact, he always jumped straight into the basket as soon as the lid was opened, and lay down.

  That morning they again met Block, who stared with great interest at the dog. He plainly recognised it as the same dog as before.

  'There's Block,' said Julian, in a low voice. 'Don't drive Timmy off this time. We'll pretend he's a stray who always meets us each morning.'

  So they let Timmy run round them, and when Block came up, they nodded to him, and made as if to go on their way. But the man stopped them.

  'That dog seems to be a friend of yours,' he said, in his curious monotone of a voice.

  'Oh yes. He goes with us each morning now,' said Julian, politely. 'He quite thinks he's our dog! Nice fellow, isn't he?'

  Block stared at Timmy, who growled. 'Mind you do not bring that dog into the house,' said Block. 'If you do, Mr Lenoir will have him killed.'

  Julian saw George's face beginning to turn red with fury. He spoke hurriedly. 'Why should we bring him to the house, Block? Don't be silly!'

  Block, however, did not appear to hear. He gave Timmy a nasty look, and went on his way, occasionally turning round to look at the little company of children.

  'Horrid fellow!' said George, angrily. 'How dare he say things like that?'

  When they got back to Marybelle's bedroom that morning, they pulled Timmy up from the pit, and let him out of the basket. 'We'll put him into the secret passage as usual,' said George, 'and I'll put some biscuits in with him. I got some nice ones for him this morning, the sort he likes, all big and crunchy.'

  She went to the door - but just as she was about to unlock it and take Timmy into Sooty's room next door, Timmy gave a small growl.

  George took her hand away from the door at once. She turned to look at Timmy. He was standing stiffly, the hackles on his neck rising up, and he was staring fixedly at the door. George put her hand to her lips warningly, and whispered:

  'Someone's outside. Timmy knows. He's smelt them. Will you all talk loudly, and pretend to be playing a game? I'll pop Timmy into the cupboard where the rope-ladder is kept.'

  At once the others began to talk to one another, whilst George swiftly dragged Timmy to the cupboard, patted him to make him understand he was to be quiet, and shut him in.

  'My turn to deal,' said Julian loudly, and took a pack of snap cards from the top of the chest. 'You won last time, Dick. Bet I'll win this time.'

  He dealt swiftly. The others, still talking loudly, saying anything that came into their heads, began to play snap. They yelled 'snap' nearly all the time, pretending to be very jolly and hilarious. Anyone listening outside the door would never guess it was all pretence.

  George, who was watching the door closely, saw that the handle was gradually turning, very slowly indeed. Someone meant to open the door without being heard, and come in unexpectedly. But the door was locked!

  Soon the person outside, whoever it was, realised that the door was locked, and the handle slowly turned the other way again. Then it was still. There came no other sound. It was impossible to know if anyone was still outside the door or not.

  But Timmy would know! Signing to the others to carry on with their shouting and laughing, George let Timmy out of the cupboard. He ran to the door of the room, and stood there, sniffing quietly. Then he turned and looked at George, his tail wagging.

  'It's all right,' said George to the others. 'There's no one there now. Timmy always knows. We'd better quickly take him into your room, Sooty, while the coast is clear. Who could it have been, do you think, snooping outside?'

  'Block, I should say,' said Sooty. He unlocked the door and peered out. There was no one in the passage. Sooty tiptoed to the door at the end and looked out there also. He waved to George to tell her it was all right to take Timmy into his room.

  Soon Timmy was safely in the secret passage, crunching up his favourite biscuits. He had got quite used to his queer life now, and did not mind at all. He knew his way about the passage, and had explored other passages that led from it. He was quite at home in the maze of secret ways!

  'Better go and have our dinner now,' said Dick. 'And mind, Anne - don't go and say anything silly in front of that horrid Block, in case he reads your lips.'

  'Of course I shan't,' said Anne, indignantly. 'I wouldn't have before, but I never thought of him reading my lips. If he does, he's very clever.'

  Soon they were all sitting down to lunch. Block was there, waiting to serve them. Sarah was out for the day and did not appear. Block served them with soup, and then went out.

  Suddenly, to the children's intense surprise and fright, they heard Timmy barking loudly! They all jumped violently.

  'Listen! Hark at Timmy!' said Julian. 'He must be somewhere near here, in that secret passage. How weird it sounds, his bark coming muffled and distant like that. But anyone would know it was a dog barking.'

  'Don't say anything at all about it in front of Block,' said Sooty. 'Not a word. Pretend not to hear at all, if Timmy barks again. What on earth is he barking for?'

  'It's the bark he uses when he's excited and pleased,' said George. 'I expect he's chasing a rat. He always goes right off his head when he sees a rat or a rabbit. There he goes again. Oh, dear, I hope he catches the rat quickly and settles down!'

  Block came back at that moment. Timmy had again just stopped barking. But, in a moment or two, his doggy voice could be heard once more, very muffled. 'Woof! Woof-woof!'

  Julian was watching Block closely. The man went on serving the meat. He said nothing, but looked round at the children intently, as if he wanted to see each child's expression, or see if they said anything.

  'Jolly good soup that was today,' said Julian, cheerfully, looking round at the others. 'I must say Sarah is a wonderful cook.'

  'I think her ginger buns are gorgeous,' said Anne. 'Especially when they are all hot from the oven.'

  'Woof-woof,' said Timmy's voice from far away behind the walls.

  'George, your mother makes the most heavenly fruit cake I ever tasted,' said Dick to George, wishing Timmy would be quiet. 'I do wonder how they're all getting on at Kirrin Cottage, and if they've started mending the roof yet.'

  'Woof!' said Timmy, joyfully chasing his rat down another bit of passage.

  Block served everyone and then silently disappeared. Julian went to the door to make sure he had gone and was not outside.

  'I hope old Block is as deaf as a post!' he said. 'I could have sworn I saw a surprised look come into those cold eyes of his, when Timmy barked.'

  'Well, if he could hear him - which I don't believe,' said George, 'he must have been jolly surprised to see us talking away and not paying any attention to a dog's barking at all!'

  The others giggled. They kept a sharp ear for Block's return. They heard footsteps after a time, and began to pile their plates together for him to take away.

  The schoolroom door opened. But it was not Block who came in. It was Mr Lenoir! He came in, smiling as usual, and looked round at the surprised children.

  'Ah! So you are enjoying your dinner, and eating it all up, like good children,' he said. He always irritated the children because he spoke to them as if they were very small. 'Does Block wait on you properly?'

  'Oh yes, sir, thank you,' sa
id Julian, standing up politely. 'We are having a very nice time here. We think Sarah is a wonderful cook!'

  'Ah, that's good, that's good,' said Mr Lenoir. The children waited impatiently for him to go. They were so afraid that Timmy would bark again. But Mr Lenoir seemed in no hurry.

  And then Timmy barked again! 'Woof, woof, woof!'

  Chapter Eleven

  GEORGE IS WORRIED

  MR LENOIR cocked his head on one side almost like a startled dog, when he heard the muffled barking. He looked at the children. But they made no sign of having heard anything. Mr Lenoir listened a little while, saying nothing. Then he turned to a drawing-book, belonging to Julian, and began to look at the sketches there.

  The children felt somehow that he was doing it for the sake of staying in the schoolroom a little longer. Into Julian's mind came the quick suspicion that somehow Mr Lenoir must have been told of Timmy's barking and come to investigate it for himself. It was the first time he had ever come to the schoolroom!

  Timmy barked again, a little more distantly. Mr Lenoir's nose grew white at the tip. Sooty and Marybelle knew the danger-sign, and glanced at one another. That white-tipped nose usually meant a storm of temper!

  'Do you hear that noise?' said Mr Lenoir, snapping out the words.

  'What noise, sir?' asked Julian, politely.

  Timmy barked again.

  'Don't be foolish! There's the noise again!' said Mr Lenoir. At that moment a gull called outside the window, circling in the sea-breeze.

  'Oh - that gull, sir? Yes, we often hear the gulls,' said Dick, brightly. 'Sometimes they seem to mew like a cat sir.'

  'Pah!' said Mr Lenoir, almost spitting out the word. 'I suppose you will say they also bark like a dog?'

  'Well, they might, I suppose, sir,' agreed Dick, looking faintly surprised. 'After all, if they can mew like cats, there's no reason why they shouldn't bark like dogs.'