My intimidation did nothing to frighten the old man. "I already said I don't know him!" he grinned.

I pointed to the drawing, my voice grave as I stated, "In truth, we’ve managed to determine the exact design for these three contraptions through certain channels. The design you drew is basically the same as the murderer’s. Do you still insist that you have nothing to do with him?"

The old man lit another cigarette and exhaled a cloud of white smoke. "Do you know why?" he asked.

"You’re asking me?"

"Excellent engineers have similar ideas,” he slowly explained. “We use the simplest and most effective way to achieve our goals. I guess this is what they call, ‘Great minds think alike!’"

I hadn’t expected such a reply. Logically speaking, there was nothing wrong with his statement but my intuition told me there was a connection between the two.

Seeing my silence, the old man arrogantly...