“It’s hard on me,” he said, “but I feel I ought to tell you, if you’ll excuse me, Miss Bennett?”

Dick rose and followed the detective to the gate, and then Elk spoke in a low tone.

“Lord Farmley’s house was burgled at one o’clock this morning, and the Frogs have got away with the draft treaty!”

Watching the two furtively, the girl saw nothing in Dick Gordon’s demeanour to indicate that he had received any news which was of consequence to himself. He came slowly back to the table.

“I am afraid I must go,” he said. “Elk’s trouble is sufficiently important to take me back to town.”

He saw the regret in Ella’s eyes and was satisfied. The leave-taking was short, for it was very necessary that he should get back to town as quickly as his car could carry him.

On the journey Elk told all that he knew. Lord Farmley had spent the week-end in his town house. He was working on two new clauses which had been inserted on the private representation of the American ambassador, who, as usual, held a watching brief in the matter, but managed (also as usual) to secure the amendment of a clause dealing with transshipments that, had it remained unamended, would have proved detrimental to his country. All this Dick learnt later. He was unaware at the time that the embassy knew of the treaty’s existence.

Lord Farmley had replaced the document in the safe, which was a “Cham” of the latest make, and built into the wall of his study, locked and double-locked the steel doors, switched on the burglar alarm, and went to bed.

He had no occasion to go to the safe until after lunch. To all appearances, the safe-doors had not been touched. After lunch, intending to work again on the treaty, he put his key in the lock, to discover that, when it turned, the wards met no resistance. He pulled at the handle. It came away in his hand. The safe was open in the sense that it was not locked, and the treaty, together with his notes and amendments, had gone.

“How did they get in?” asked Dick as the car whizzed furiously along the country road.