"Huh?" Dave gulped. "Somebody aboard her? You mean, right now?" "I mean right now," the chief of U. S. Intelligence said grimly. "The Indian was at anchor in San Diego Harbor. She's still there. However, the instant it was realized what had happened, the Indian became an isolated ship. Not a man, not even her captain, was allowed to go ashore. I radioed those orders myself. And not a boat of any type was permitted to come so much as within hailing distance. An order was issued to shoot anybody who attempted to leave the Indian, and to shoot anybody who attempted to approach the Indian. That order still stands. Mighty hard on the chaps who were due shore leave--she hadn't been in port more than a day. But we're not taking chances." Colonel Welsh paused for breath, and Dave nodded his head slowly. "I get it," he said. "So far no darn Jap has got his hands on those plans. No real Jap, I mean." "What's that?" Freddy Farmer spoke up. "What do you mean, no real Jap?" "A Nazi can pass for an Englishman, or a Yank, or 'most any nationality under the sun," Dave said. "But that's barring the yellow races, of course. And that's just what I mean. A Jap aboard an American ship can't pass for a Yank. He's out and out of the yellow race. And you haven't any Americanized Japs on the Indian, have you, sir?" Dave directed the last at Colonel Welsh, who instantly shook his head. "None," the senior officer said. "Not a one. And you've got the right idea, Dawson. It couldn't have been a Jap who killed Jackson and Pollard. So it must have been one of Hitler's men, or maybe one of Mussolini's. I doubt that, though. Italians just haven't got the brains to be that clever. So a Hitlerite is our man. Naturally he's cooperating with the Japs, and will pass on what he has the first instant he can. That's our job, though: to nail him, and nail him good, before he has that chance." "I suppose you've checked the Indian's list of officers and lesser ratings, haven't you, sir?" Dave asked. "Backwards and forwards!" the Colonel said savagely. "And up and down as well. We've dug into every man's life with pick and shovel, you might say, and didn't come up with so much as a single suspicion. That's the devilish part of this kind of a thing. It's quite possible that this particular rat, or rats, has served in our navy for years. The whole civilized world is learning more and more each new day, to its sorrow, how thoroughly Germany and Japan planned for this thing long, long ago. When Hitler was somebody we just laughed at and made jokes about, he was sending his confounded spies to the four ends of the earth, and getting them all set to do their part when _Der Tag_ arrived. But I don't have to tell this to you. You two have no doubt seen countless examples of that sort of thing." The chief of Intelligence paused for a moment and slowly closed his long tapering fingers into rock hard fists.