Where was he going? He hadn’t the faintest idea. Beyond a fixed determination to get even with Mr. Brown he had no plans. He re-read Sir James’s letter, and shook his head. Tuppence must be avenged. Still, it was kind of the old fellow.

“Better answer it, I suppose.” He went across to the writing-table. With the usual perversity of bedroom stationery, there were innumerable envelopes and no paper. He rang. No one came. Tommy fumed at the delay. Then he remembered that there was a good supply in Julius’s sitting-room. The American had announced his immediate departure, there would be no fear of running up against him. Besides, he wouldn’t mind if he did. He was beginning to be rather ashamed of the things he had said. Old Julius had taken them jolly well. He’d apologize if he found him there.

But the room was deserted. Tommy walked across to the writing-table, and opened the middle drawer. A photograph, carelessly thrust in face upwards, caught his eye. For a moment he stood rooted to the ground. Then he took it out, shut the drawer, walked slowly over to an arm-chair, and sat down still staring at the photograph in his hand.

What on earth was a photograph of the French girl Annette doing in Julius Hersheimmer’s writing-table?

CHAPTER XXII.

IN DOWNING STREET

The Prime Minister tapped the desk in front of him with nervous fingers. His face was worn and harassed. He took up his conversation with Mr. Carter at the point it had broken off. “I don’t understand,” he said. “Do you really mean that things are not so desperate after all?”

“So this lad seems to think.”

“Let’s have a look at his letter again.”

Mr. Carter handed it over. It was written in a sprawling boyish hand.

“DEAR MR. CARTER,

“Something’s turned up that has given me a jar. Of course I may be simply making an awful ass of myself, but I don’t think so. If my conclusions are right, that girl at Manchester was just a plant. The whole thing was prearranged, sham packet and all, with the object of making us think the game was up—therefore I fancy that we must have been pretty hot on the scent.

“I think I know who the real Jane Finn is, and I’ve even got an idea where the papers are. That last’s only a guess, of course, but I’ve a sort of feeling it’ll turn out right. Anyhow, I enclose it in a sealed envelope for what it’s worth. I’m going to ask you not to open it until the very last moment, midnight on the 28th, in fact. You’ll understand why in a minute. You see, I’ve figured it out that those things of Tuppence’s are a plant too, and she’s no more drowned than I am. The way I reason is this: as a last chance they’ll let Jane Finn escape in the hope that she’s been shamming this memory stunt, and that once she thinks she’s free she’ll go right away to the cache. Of course it’s an awful risk for them to take, because she knows all about them—but they’re pretty desperate to get hold of that treaty. But if they know that the papers have been recovered by us, neither of those two girls’ lives will be worth an hour’s purchase. I must try and get hold of Tuppence before Jane escapes.

“I want a repeat of that telegram that was sent to Tuppence at the Ritz. Sir James Peel Edgerton said you would be able to manage that for me. He’s frightfully clever.

“One last thing—please have that house in Soho watched day and night.

“Yours, etc.,

“THOMAS BERESFORD.”

The Prime Minister looked up.

“The enclosure?”

Mr. Carter smiled dryly.

“In the vaults of the Bank. I am taking no chances.”

“You don’t think”—the Prime Minister hesitated a minute—“that it would be better to open it now? Surely we ought to secure the document, that is, provided the young man’s guess turns out to be correct, at once. We can keep the fact of having done so quite secret.”

“Can we? I’m not so sure. There are spies all round us. Once it’s known I wouldn’t give that”—he snapped his fingers—“for the life of those two girls. No, the boy trusted me, and I shan’t let him down.”

“Well, well, we must leave it at that, then. What’s he like, this lad?”

“Outwardly, he’s an ordinary clean-limbed, rather block-headed young Englishman. Slow in his mental processes. On the other hand, it’s quite impossible to lead him astray through his imagination. He hasn’t got any—so he’s difficult to deceive. He worries things out slowly, and once he’s got hold of anything he doesn’t let go. The little lady’s quite different. More intuition and less common sense. They make a pretty pair working together. Pace and stamina.”

“He seems confident,” mused the Prime Minister.

“Yes, and that’s what gives me hope. He’s the kind of diffident youth who would have to be very sure before he ventured an opinion at all.”

A half smile came to the other’s lips.

“And it is this—boy who will defeat the master criminal of our time?”

“This—boy, as you say! But I sometimes fancy I see a shadow behind.”

“You mean?”

“Peel Edgerton.”

“Peel Edgerton?” said the Prime Minister in astonishment.

“Yes. I see his hand in this.” He struck the open letter. “He’s there—working in the dark, silently, unobtrusively. I’ve always felt that if anyone was to run Mr. Brown to earth, Peel Edgerton would be the man. I tell you he’s on the case now, but doesn’t want it known. By the way, I got rather an odd request from him the other day.”

“Yes?”

“He sent me a cutting from some American paper. It referred to a man’s body found near the docks in New York about three weeks ago. He asked me to collect any information on the subject I could.”

“Well?”

Carter shrugged his shoulders.

“I couldn’t get much. Young fellow about thirty-five—poorly dressed—face very badly disfigured. He was never identified.”

“And you fancy that the two matters are connected in some way?”

“Somehow I do. I may be wrong, of course.”

There was a pause, then Mr. Carter continued:

“I asked him to come round here. Not that we’ll get anything out of him he doesn’t want to tell. His legal instincts are too strong. But there’s no doubt he can throw light on one or two obscure points in young Beresford’s letter. Ah, here he is!”

The two men rose to greet the new-comer. A half whimsical thought flashed across the Premier’s mind. “My successor, perhaps!”

“We’ve had a letter from young Beresford,” said Mr. Carter, coming to the point at once. “You’ve seen him, I suppose?”

“You suppose wrong,” said the lawyer.

“Oh!” Mr. Carter was a little nonplussed.

Sir James smiled, and stroked his chin.

“He rang me up,” he volunteered.

“Would you have any objection to telling us exactly what passed between you?”