"As a matter of fact I have. Aha, you didn't expect that. Wait a sec."

Tuppence ran to her suit case, extracted a small red volume and returned to the table. She turned the leaves rapidly. "Here we are. Luke, Chapter XI, Verse 9. Oh! Tommy, look."

Tommy bent over and looked where Tuppence's small finger pointed to a portion of the verse in question.

"Seek, and ye shall find."

"That's it," cried Tuppence. "We've got it! Solve the cryptogram and the treasure is ours-or rather Monica's."

"Well, let's get to work on the cryptogram, as you call it. 'My first you put on glowing coal.' What does that mean, I wonder? Then-'My second really is the first.' That's pure gibberish."

"It's quite simple really," said Tuppence kindly. "It's just a sort of knack. Let me have it."

Tommy surrendered it willingly. Tuppence ensconed herself in an arm chair, and began muttering to herself with bent brows.

"It's quite simple really," murmured Tommy when half an hour had elapsed.

"Don't crow! We're the wrong generation for this. I've a good mind to go back to town tomorrow and call on some old pussy who would probably read it as easy as winking. It's a knack, that's all."

"Well, let's have one more try."

"There aren't many things you can put on glowing coal," said Tuppence thoughtfully. "There's water, to put it out, or wood, or a kettle."

"It must be one syllable, I suppose? What about wood, then?"

"You couldn't put anything into wood, though."

"There's no one syllable word instead of water, but there must be one syllable things you can put on a fire in the kettle line."

"Saucepans," mused Tuppence. "Frying pans. How about pan? Or pot? What's a word beginning pan or pot that is something you cook?"

"Pottery," suggested Tommy. "You bake that in the fire. Wouldn't that be near enough?"

"The rest of it doesn't fit. Pancakes? No. Oh! bother."

They were interrupted by the little serving maid, who told them that dinner would be ready in a few minutes.

"Only Mrs. Lumley, she wanted to know if you'd like your potatoes fried, or boiled in their jackets? She's got some of each."

"Boiled in their jackets," said Tuppence promptly. "I love potatoes-" She stopped dead with her mouth open.

"What's the matter, Tuppence? Have you seen a ghost?"

'Tommy," cried Tuppence. "Don't you see? That's it! The word, I mean. Potatoes! 'My first you put on glowing coal'-that's pot. 'And into it you put my whole.' 'My second really is the first.' that's A, the first letter of the alphabet. 'My third mislikes the wintry blast'-cold toes of course!"

"You're right, Tuppence. Very clever of you. But I'm afraid we've wasted an awful lot of time over nothing. Potatoes don't fit in at all with missing treasure. Half a sec., though. What did you read out just now, when we were going through the box? Something about a recipe for New Potatoes. I wonder whether there's anything in that."

He rummaged hastily through the pile of recipes.

"Here it is. 'TO KEEP NEW POTATOES. Put the new potatoes into tins and bury them in the garden. Even in the middle of winter, they will taste as though freshly dug.' "

"We've got it," screamed Tuppence. "That's it. The treasure is in the garden, buried in a tin."

"But I asked the gardener. He said he'd never buried anything."

"Yes, I know, but that's because people never really answer what you say, they answer what they think you mean. He knew he'd never buried anything out of the common. We'll go to-morrow and ask him where he buried the potatoes."

The following morning was Christmas Eve. By dint of inquiry they found the old gardener's cottage. Tuppence broached the subject after some minutes' conversation.

"I wish one could have new potatoes at Christmas time," she remarked. "Wouldn't they be good with turkey? Do people round here ever bury them in tins? I've heard that keeps them fresh."

"Ay, that they do," declared the old man. "Old Miss Deane, up to the Red House, she allus had three tins buried every summer, and as often as not forgot to have 'em dug up again!"

"In the bed by the house, as a rule, didn't she?"

"No, over against the wall by the fir tree."

Having got the information they wanted, they soon took their leave of the old man, presenting him with five shillings as a Christmas box.

"And now for Monica," said Tommy.

"Tommy! You have no sense of the dramatic. Leave it to me. I've got a beautiful plan. Do you think you could manage to beg, borrow, or steal a spade?"

Somehow or other, a spade was duly produced, and that night, late, two figures might have been seen stealing into the grounds of the Red House. The place indicated by the gardener was easily found, and Tommy set to work. Presently his spade rang on metal, and a few seconds later he had unearthed a big biscuit tin. It was sealed round with adhesive plaster and firmly fastened down, but Tuppence, by the aid of Tommy's knife, soon managed to open it. Then she gave a groan. The tin was full of potatoes. She poured them out so that the tin was completely empty, but there were no other contents.

"Go on digging, Tommy."

It was some time before a second tin rewarded their search As before Tuppence unsealed it.

"Well?" demanded Tommy anxiously.

"Potatoes again!"

"Damn!" said Tommy and set to once more

"The third time is lucky," said Tuppence consolingly.

"I believe the whole thing's a mare's nest," said Tommy gloomily, but he continued to dig.

At last a third tin was brought to light.

"Potatoes aga-" began Tuppence, then stopped. "Oh! Tommy, we've got it. It's only potatoes on top. Look!"

She held up a big old fashioned velvet bag.

"Cut along home," cried Tommy. "It's icy cold. Take the bag with you. I must just shovel back the earth. And may a thousand curses light upon your head, Tuppence, if you open that bag before I come!"

"I'll play fair. Ouch! I'm frozen." She beat a speedy retreat.

On arrival at the Inn she had not long to wait. Tommy was hard upon her heels, perspiring freely after his digging and the final brisk run.

"Now then," said Tommy. 'The private inquiry agents make good! Open the loot, Mrs. Beresford."

Inside the bag was a package done up in oil silk and a heavy chamois leather bag. They opened the latter first. It was full of gold sovereigns. Tommy counted them.

"Two hundred pounds. That was all they would let her have, I suppose. Cut open the package."

Tuppence did so. It was full of closely folded banknotes. Tommy and Tuppence counted them carefully. They amounted to exactly twenty thousand pounds!

"Whew!" said Tommy. "Isn't it lucky for Monica that we're both rich and honest? What's that done up in tissue paper?"

Tuppence unrolled the little parcel and drew out a magnificent string of pearls, exquisitely matched.

"I don't know much about these things," said Tommy slowly, "But I'm pretty sure that those pearls are worth another five thousand pounds at least. Look at the size of them. Now I see why the old lady kept that cutting about pearls being a good investment. She must have realized all her securities and turned them into notes and jewels."

"Oh! Tommy, isn't it wonderful? Darling Monica. Now she can marry her nice young man and live happily ever afterwards, like me."

"That's rather sweet of you, Tuppence. So you are happy with me?"

"As a matter of fact," said Tuppence, "I am. But I didn't mean to say so. It slipped out. What with being excited, and Christmas Eve, and one thing and another-"

"If you really love me," said Tommy, "will you answer me one question?"

"I hate these catches," said Tuppence. "But-well-all right."

"Then how did you know that Monica was a clergyman's daughter?"

"Oh, that was just cheating," said Tuppence happily. "I opened her letter making an appointment, and a Mr. Deane was Father's curate once and he had a little girl called Monica, about four or five years younger than me. So I put two and two together."

"You are a shameless creature," said Tommy. "Hullo, there's twelve o'clock striking. Happy Christmas, Tuppence."

"Happy Christmas, Tommy. It'll be a Happy Christmas for Monica too-and all owing to US. I am glad. Poor thing, she has been so miserable. Do you know, Tommy, I feel all queer and choky about the throat when I think of it."

"Darling Tuppence," said Tommy.

"Darling Tommy," said Tuppence. "How awfully sentimental we are getting."

"Christmas comes but once a year," said Tommy sententiously. "That's what our great grandmothers said and I expect there's a lot of truth in it still."