Christmas came so quickly, and there was so much to do that Fatty had no time to teach the Find-Outers any of the things he had learnt. The postman came continually to the three homes, and cards soon stood everywhere. Parcels were hidden away, Mince-pies were made. Large turkeys hung in the larders.
“I do love Christmas,” said Bets a hundred times a day. “I wonder what I shall get on Christmas morning. I do hope I get a new doll. I’d like one that opens and shuts its eyes properly. I’ve only got one doll that does that, and her eyes always stick shut. Then I have to shake her hard, and I’m sure she thinks I’m cross with her.”
“Baby!” said Pip. “Fancy still wanting dolls! I bet you won’t get one.”
To Bets’ great disappointment there was no doll for her in her Christmas parcels. Everyone thought that as she was now nine, and liked to say she was getting big, she wouldn’t want a doll. So her mother had given her a work-basket and her father a difficult jigsaw which she knew Pip would like much better than she would!
She was rather sad - but Fatty put everything right by coming round on Christmas morning with a big box for Bets - and inside was the doll she had wanted! It opened and shut its eyes without any shaking at all, and had such a smiling face that Bets lost her heart to it at once. She flung herself on Fatty and hugged him like a small bear.
He was pleased. He liked Bets. Mrs. Hilton was surprised at the beautiful doll.
“That is very kind of you, Frederick,” she said. “You shouldn’t have spent so much money on Bets, though.”
“I shall have plenty for my birthday,” said Fatty politely, “and I’ve heaps for Christmas, Mrs. Hilton. I asked for money this Christmas instead of toys or books.”
“I should have thought you had plenty without asking for any more,” said Mrs. Hilton, who privately thought that Fatty always had far too much money to spend. “Why did you want so much money?”
“Well - to spend on something I didn’t think people would give me,” said Fatty, looking rather uncomfortable. “It’s a bit of a secret, really, Mrs. Hilton.”
“Oh,” said Bets’ mother. “Well, I hope it’s nothing that will get you into trouble. I don’t want Mr. Goon, the policeman, round here complaining about you children any more.”
“Oh no, Mrs. Hilton,” Fatty assured her. “Mr. Goon doesn’t come into this at all.”
As soon as her mother had gone Bets turned to Fatty with sparkling eyes. “What’s the secret? What are you going to buy?”
“Disguises!” said Fatty, dropping his voice to a whisper. “Wigs! Eyebrows! Teeth!”
“Oooh - teeth!” said Bets, in wonder. “But how can you wear false teeth without having your real teeth out, Fatty?”
“You wait and see,” said Fatty mysteriously.
“Do come after Christmas as soon as you can and teach us how to write invisibly and how to get out of locked rooms,” begged Bets. “I say - I wonder if old Clear-Orf knows those things?”
“Course not!” said Fatty scornfully. “And if Clear-Orf tried to disguise himself it wouldn’t be a bit of good. We’d always know his frog’s eyes and big fat nose.”
Bets giggled. She hugged her doll, and thought how clever and kind Fatty was. She said so.
“Oh, well,” said Fatty, swelling up a little, prepared to boast to his heart’s content, “I’m -”
But just then Pip came into the room and Fatty stopped. Pip didn’t take kindly to Fatty’s boasting. Fatty had a few words with Pip and then went.
“I’ll come along after Christmas and give you all some Find-Outers lessons,” he promised. “Give my love to Daisy and Larry if you see them today. I’ve got to go over to my grandmother’s for Christmas with my mother and father.”
Bets told Pip what Fatty had said about spending his money on disguises. “He said he would buy wigs - and eyebrows - and teeth!” said Bets. “Oh, Pip, do you think he will? What shop sells things like that? I’ve never seen any.”
“Oh, I suppose they are shops that actors go to,” said Pip. “They have to buy things like that. Well, we’ll see what Fatty gets. We ought to have some fun.”
When the excitement of Christmas was over, the Christmas trees taken down and re-planted in the garden, and the cards sent away to a children’s hospital, the children felt rather flat. Fatty apparently was staying at his grand-mother’s, for they saw nothing of him, and had a post-card saying, “Back soon. Fatty.”
“I wish he’d come back,” said Bets. “Suppose a mystery cropped up? We’d have to be Find-Outers again - and our chief wouldn’t be here.”
“Well, there isn’t any mystery,” said Pip.
“How do you know?” said Bets. “Old Clear-Orf might be trying to solve one we don’t know about.”
“Well, ask him then,” said Pip impatiently, for he was trying to read, and Bets kept interrupting him. He didn’t really mean Bets to go and ask the policeman, of course. But she couldn’t help thinking it was rather a good idea.
“Then we should know if there was going to be something for us to solve these hols,” thought the little girl. “I’m longing to hunt for clues again - and suspects - and track down things.”
So the next time she met the policeman she went up to him. “Mr. Goon, have you got a mystery to solve these holidays?” she asked.
The policeman frowned. He wondered if Bets and the others were on the track of something he didn’t know about - else why should Bets want to know if he was solving one?
“Are you interfering in anything again?” he asked sternly. “If you are, you stop it. See? I won’t have you children messing about in jobs that properly belong to me. Interfering with the Law!”
“We’re not interfering or messing about,” said Bets, rather alarmed.
“Well, you clear orf,” said Mr. Goon. “You’ve put a spoke in my wheel before now, and I’m not having it again!”
“What wheel?” said Bets, puzzled. Mr. Goon did one of his snorts and walked off. He couldn’t bear any children, but he particularly detested the Five Find-Outers and Dog. Bets stared after him.
“Well, I didn’t get much out of him,” she thought. “What did he mean about wheels?”
It was lovely when Fatty came back again. He brought Buster with him, of course, and the little Scottie went mad with joy when he saw all his friends.
“He didn’t have too good a time at my grandmother’s.” said Fatty. “There was an enormous ginger cat there that would keep chasing him, and my grandmother insisted on his having a bath every single day. He was awfully miserable really. He would have chased the cat, of course; but he was too much of a gentleman to go after a cat belonging to his hostess.”
“Have you bought any disguises yet?” asked Bets excitedly.
“Just waiting for my birthday,” said Fatty. “It’s tomorrow, as you know. Then, when I’ve got enough money, I’m going up to London to do a spot of shopping.”
“By yourself?” said Larry.
“You bet,” said Fatty. “What grown-up would let me spend my money on disguises? Although we’ve solved two frightfully difficult mysteries, no grown-up would think it was necessary to buy wigs and eyebrows - now would they? Even though at any moment we might have to solve a third mystery.”
Put like that, it seemed a really urgent matter to buy disguises of all sorts. Fatty was so very serious about it. Bets felt that the third mystery might be just round the corner.
“Fatty, can we try out the disguises when you buy them?” she said.
“Of course,” said Fatty. “We’ll have to practise wearing them. It will be fun.”
“Have you brought the invisible ink with you this afternoon?” asked Pip. “That’s what I want to see!”
“Can you see invisible ink?” asked Bets. “I shouldn’t have thought you could.”
The others laughed. “Silly! The ink isn’t invisible - it’s only the writing you do with it that is.”
“I’ve got a bottle,” said Fatty. “It’s very expensive.”
He took a bottle from his pocket. It was quite small, and contained a colourless liquid which, to Bets, looked like water.
Fatty took out his note-book and a pen with a clean new nib. He put the bottle on the table, and undid the screw-top.
“Now I’ll write a secret letter,” he said, “and my writing will be invisible.”
Bets leaned over him to see. She lost her balance and jerked hard against the table. The bottle of invisible ink was jolted over, rolled to the edge of the table, and neatly emptied its contents on the floor in a small round puddle, near Buster.
“Woof!” said Buster in surprise, and began to lick it up. But the taste was horrid. He stopped and looked up at the alarmed children, his pink tongue hanging out.
“Oh, Buster! Buster, you’ve drunk invisible ink!” cried Bets, almost in tears. “Fatty, will he become invisible?”
“No, idiot,” said Fatty. “Well, that’s the end of the ink. What a clumsy you are Bets!”
“I’m terribly, terribly sorry,” said poor Bets. “I just sort of slipped. Oh, Fatty, now we can’t write in invisible writing.”
Daisy mopped up the rest of the ink. All the children were disappointed. Buster still hung out his tongue, and had such a disgusted look on his face that Larry fetched him some water to take the nasty taste out of his mouth.
“Well, I know one or two more ways of writing invisibly,” said Fatty, much to Bets’ relief. “Any one got an orange? Now, watch out for a little magic!”