At once, you were aware of a stranger's gaze focused on you. He had been trailing you since before, observing you intently. His eyes were boring into yours. With rising concern, you quickened your pace, but he too quickened his step in response. Suddenly, he grabbed your wrist and said

"Wait, I want to speak with you."

You were startled by his sudden action. His eyes bore into yours, radiating sadness.