"I haven't got it! I swear I haven't!"

"I know that already, for I searched you. Where is it?"

"Ask Allah! It was stolen by a Sikh, who delivered it to someone in a house near the military hospital, who in turn gave it to an Arab, who brought it here. I hoped that fellow Charkian might steal it back again, but you have spoiled everything. Charkian will turn against me now to save himself. What do you want with the letter?"

"I must have it!" Grim answered. "The French agent--"

"What--Sidi Said? You know him?"

"Surely. He would pay me a thousand pounds for it."

"May Allah change his face! He only offered me five hundred!"

"You have seen him already, then?" Grim asked. "I don't believe you!

When did you see him?"

"On the way up here. He stopped my cab to speak to me at the foot of the hill."

I began to see the drift of Grim's purpose. He had established the fact that the French secret agent was already on the track of the letter, and that in turn explained why he had not seized Yussuf Dakmar and put him in jail. It was better to use the man, as the sequel proved. And Yussuf Dakmar walked straight into Grim's trap.

"What is your name?" he demanded.

"Call me Omar," said Grim.

"A Turk, are you? Well, Omar, let us help each other to get that letter, and divide the reward. Sidi Said told me that the British are sure to confront Feisul with it, and to do it secretly if they can.

They will try to send it to Damascus. Let us two find out who takes it, and waylay him."

"Why should I divide with you?" demanded Grim, who is much too good an actor to pretend to agree without bargaining.

"Because otherwise you will not succeed. I was afraid of you when you first surprised me with Charkian. But now that I know you for a spy in the pay of the French I am not afraid of you, even though you have my revolver and dagger. You dare not kill me, for I would shout for help and the guard would come. You are in danger as much as I am. So you may either agree to work with me, sharing the reward, or you may work alone and have nothing for your pains; for I shall bring accomplices to help me take the letter from you after you have stolen it!"

Well, I suppose that anyone with criminal intentions could submit gracefully to that much blackmail. Besides, Grim was rather pressed for time and couldn't afford to prolong the argument.

"I see you are a determined man," he answered. "Your demand is unreasonable, but I must agree to it."

"Then give me back my pistol!"

"No. I need it. I lent mine this evening to another man, who has not yet returned it. That was a piece of wood with which I held you up just now. You must get yourself another."

"They are hard to come by in Jerusalem. Give me mine back."

"No. I shall keep it to protect myself against you."

"Why? You have no need to fear me if we work together."

"Because I intend to tell you what I know; and I may find it convenient to shoot you if you betray the information."

"Oh! Well, tell away."

"I have been cleverer than you," Grim announced blandly. "I knew who had given the order to the Sikh to steal that letter from you, and I was concealed in his house when the letter was brought to him. I heard the conference that followed, so I know what is going to be done about it."

"Oh! That was very smart. Well, tell me."

"Three men are going to take the letter to Damascus, but I don't know which of them will have it on his person. One is an Arab. One is an American. The third is that same Sikh who took the letter from you.

They will take the train from Ludd, and I have engaged myself as servant to the American."

"Now that was extremely clever of, you!" said Yussuf Dakmar.

"Yes," Grim agreed. "But perhaps it will be as well to have an accomplice after all, and you will do as well as any. If I steal the letter they may accuse me; but if I can pa.s.s it to you, then I can submit to a search and oblige them to apologize."

"True! True! That will be excellent."

"So you had better take the morning train for Damascus," Grim continued.

"But understand: If you bring others with you I shall suspect you of intending to play a trick on me. In that event I shall shoot you with your own pistol, and take my chance of escaping afterward. In fact, you are a dead man, Yussuf Dakmar, the minute I suspect you of playing me false."

"The same to you likewise!" Yussuf Dakmar answered fervently.

"Then we understand each other," said Grim. "The best thing you can do between now and train-time is to see the French agent again."

"What good will that do? He is irritable--nervous; he will only ask a thousand questions."

"Then your visit will do all the more good. You can calm him. We don't want a horde of fools interfering with us on the journey. We want to work quietly, and to share the reward between us. Therefore, you should tell him that you are confident of getting the letter if he will only leave the business to you alone. Give him every a.s.surance, and explain to him that interference may mean failure. Now, I have done much the greater part so far; let this be your share to balance the account between us; you go to Sidi Said, the French agent, and make sure that he doesn't hinder us by trying to help."

"Very well, I will do that. And I shall meet you at the station in the morning?"

"No. My party will go as far as Ludd by motor. You will see us join the train there. Go now, while the guard is out of the way."

I could not see, but I heard Yussuf Dakmar get up and go. He had hardly time to get out of earshot when Grim's voice broke the silence again:

"You there, Ramsden?"

Instead of answering I approached.

"Did you hear what was said?" he asked.

"Yes. Why didn't you arrest both the blackguards and have done with it?"

"Better the evil that we know..." he answered, with the familiar smile in his voice. "The important thing is to sidetrack the French agent, who could put fifty ruffians on our trail instead of one."

"Why not send a provost-marshal's guard to the French agent, then?"

"Can't do that. France and Great Britain are allies. Besides, they might retaliate by spiflicating our agent in Damascus. Wise folk who live in gla.s.s-houses don't throw stones. What I think has been accomplished is to reduce our probable risk down to Yussuf Dakmar, who's a mean squib at best; and I think we've drawn suspicion clear away from Mabel Ticknor. All that remains is for me to go to that room where you see the light burning and discuss matters with the chief."

"If he's awake he's lonely!" said I; and I told Grim of our experience inside the building.

"Yes," he said. "Governments are all like that. They talk glibly of the ship of state; but a ship run in the same way would pile up or sink the first night out. You'd better go home and get an hour's sleep; I'll call you at seven."

"We'll take turns sleeping on the train," I answered. "Come first and rescue Jeremy. I think the guard pinched him. Say, did you intend one of us to go and decoy the guard away that time you raised your voice?"