"Hush!" cautioned Blake. "The transoms are open and he may hear you."
But a look into the reflecting glasses showed that the two men—the Frenchman and the German—had not looked up from their eager poring over the map, or whatever paper was between them.
"How long have they been this way?" asked Blake, in a whisper, of Charlie.
"I don't know," Macaroni answered. "I happened to see them when I came down to get something, and after I'd watched them a while I went to tell you."
"I'm glad you did," went on Blake; "though I don't know what it means—if it means anything."
"It means something, all right," declared Joe, and he, like the others, was careful to keep his voice low-pitched. "It means treason, if I'm any judge!"
"Treason?" repeated Blake.
"Yes; wouldn't you call it that if you saw one of our army officers having a secret talk with a German enemy?"
"I suppose so," assented Blake. "And yet Lieutenant Secor isn't one of our officers."
"No, but he's been in our camps, and he's been a guest of Uncle Sam. He's been in a position to spy out some of the army secrets, and now we see him talking to this German."