```
"Who is the suspect?"
"Damn it, how is there still a gun?"
Wang Qiang asked as he took out his cellphone.
"Someone you wouldn't expect!"
"It was Xiaocao who provided me with the clue."
"Otherwise, I'm afraid he would've gotten away."
Song Lin said with a sigh.
"Xiaocao?"
Upon hearing this, Wang Qiang was taken aback.
"Yes, it's Xiaocao..."
Song Lin nodded and said.
"It's a pity I didn't listen to her. If I had taken the person in earlier, otherwise..."
As he spoke, Song Lin slapped himself on the face with a frustrated expression.
"It's all my fault..."
"I should have arrested him sooner..."
"It's all because I was too by-the-book..."
Song Lin said with self-reproach.
Looking at the self-reproaching Song Lin, Wang Qiang turned to Shi Guang, asking with his eyes what had happened inside.
"The parents of the couple in apartment 402 were also killed..."
Shi Guang said with a sigh.
Upon hearing this, Wang Qiang was startled.
