“It’s very simple,” said Bess. “Grandfather has two moving picture cameras trained on his hand over there on Black Knob.”
“I guessed that much.”
“The rest is deaf and dumb alphabet, that’s all. A is a clenched fist with the thumb turned in, and C—”
“How stupid I am!” Norma exclaimed. “I should have guessed it at once!”
“Oh, no!” Bess laughed. “Strange things always stick us. We want a weird explanation, when it is something just as simple as that.”
“It’s quite wonderful,” Norma exclaimed. “I shouldn’t wonder if something tremendously important would come out of it.” She was not wrong in this prediction.
“Black Knob is an important point,” said Bess. “It’s so far off shore.”
“It must be,” was the quick reply. “Particularly for enemy submarines. I’m going to tell Lieutenant Warren about it.”
“But not about television,” Bess warned. “At least, not without grandfather’s consent.”
“Not about television,” Norma agreed.