When I asked him to explain the situation, he described seeing a man who looked between his forties and fifties, bald, and about 180 cm or so. At the time, there were only street lamps illuminating the park so his vision was impaired. It appeared as if the man pushed a woman in a red dress on the ground and had sex with her, though he couldn’t hear anything due to the distance.

Because he had been too timid to call the police, he convinced himself it was a couple’s quarrel. After about an hour, he looked out of the window once more but the two had disappeared.

Song Xingchen glanced at me waiting for my command. I knew that if I gave the order, he would slay the witness. However, that meant traveling down a path of no return.

After a moment of silence, I said, "Do you remember anything else?"

The man thought for a moment, "I think he drove there because I saw a...