All along the British lines the terrifying news spread like wildfire.

Brave men trembled. “He’s in our area. The Engineer of Death is here!” For they knew that once “the engineer” had set his fiendish secret traps, no one who fell into them would ever walk away.

That’s when an unlikely hero volunteered, vowing to beat him at his own game. A skinny little genius with glasses, whose name was Percy Potts…