"No fear."
Isabel rubbed her forehead perplexedly.
"Oh, I don't know," she said, "I don't understand. But if this radium belongs to your side already——"
"That's just it," he explained. "I haven't got the concession yet. They know that—it's what makes 'em so devilish active. You'll understand they'll do their best to prevent me getting to the place."
Her eyes opened very wide.
"Their best? D'you mean they'd——"
"Lord, no. There'd be no point in that unless they had the map reference first."
"You'll be gone three weeks?"
"That's all."
"They'll follow you?"