"Here are the instructions I received," and Ráby handed him his friends' paper.

The Kaiser shook his head as he went through it. "Of course I understand Serb," he said; "but I never wrote this. Where did you get it from?"

"From the leader of the twenty-four men dressed as Turks, who, in your Majesty's name, dragged me by night from out of the dungeon of the Assembly House in Pesth. Two of them came hither with me. Your Majesty saw them in the other room."

"Bring them in here," ordered the Emperor.

One of the two secretaries went then and there to fetch them in, but returned immediately with the news that the two men had already left the Hofburg.

"The police must be notified," said Joseph.

But all their trouble was in vain. The two unknowns on leaving the palace had made direct for the river-bank, where a boat manned by four oarsmen had awaited them, and carried them away in the fog which overhung the river.

Here was an enigma to clear up! Why the men had conducted him to the palace; why they had waited for his meeting with the Emperor and then deserted him entirely; whether they had been indeed friends or foes in disguise, Ráby could not imagine. It remained an unsolved mystery.

CHAPTER XXXVII.