"The glow of a light. Can that be it?"
"It must be. That light is reflected from the conning tower. There is somebody on board."
"That matters not, if they are not on deck. Even so, we can take care of them."
"You mean to hurl it?"
"Yes; but I'd rather fasten it to the craft itself. It's safer for us and more effective."
A diabolical grin stole over the anarchist's face as he spoke. He resumed his cautious rowing.
"There's no one on deck," declared Berghoff, as they crept closer to the dark outlines of the anchored submarine.
"Good; then we can do our work quickly. Have you everything ready?"
"Yes; we'll be alongside in a minute. Don't make a failure of it."
"I have never failed yet," was the quiet reply, spoken in a voice so menacing and evil that it would have caused a shudder to run through any one less hardened than the man to whom it was addressed.