"Yes, Mr. President."

"Then you tell Mrs. Tompkins for me that I want her to take you home and take good care of you for the next few weeks. You've been overdoing it. This Z-2 work has taken it out of you. You need a rest. Now don't you worry about Z-2," he continued. "What you need to do is to take things easy. The work will go right ahead. I'm putting Z-2 under General Wakely. This country needs better intelligence services and they ought to be concentrated under one responsible head, if you ask me."

"But I tell you, Mr. President," I insisted, "there never was such an organization as Z-2. I invented it in order to clear myself with the F.B.I."

He flashed a boyish grin at me. "But there's no doubt that the Alaska went down like a stone?"

"She went up like a sky-rocket, sir."

"Then this thorium bomb doesn't sound as though it was practical, sinking one of our ships like that."

"Mr. President," I argued, "any bomb will explode if it is deliberately detonated. This bomb was deliberately touched off by Professor Chalmis. He wanted to prevent its use in warfare."

The President nodded. "Yes, yes, Mr. Tompkins. You explained that to me before. Now you be sure to tell your wife to take good care of you. When you're rested up, you come on down and see me again and we'll talk some more about this Z-2 work of yours. We can use men like you in the State Department. I'm sorry I don't know more about it, but all of President Roosevelt's papers have been removed from the White House and I don't even know what he told Stalin at Yalta. Perhaps you'd better talk to the State Department before you take that rest. That's what they're for. Thank you for seeing me."

Two beefy Secret Service men appeared in the doorway.

"Is there any particular man I should see at the Department, sir?" I asked. "I want to get this whole business cleared up."