Read "Spies of the Kaiser" by William le Queux online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
"It's a most mysterious affair, no doubt," I remarked. "Has anything further been discovered?"
"Yes, Jack," replied my friend Ray Raymond, rolling a fresh cigarette between his fingers. "On investigation, the mystery grows more complicated, more remarkable, and -- for us -- much more interesting."