As thunder roared and lightning flashed, the rain poured down through the windowpane. Youngjae peered out the window while sipping a steamy Americano. His blue knitted turtleneck kept him warm, and his reading glasses remained on his face. He had a white towel over his neck. He looked at his watch before returning his gaze to the window. Sun Hee arrived at exactly seven o’clock in the evening. They continued to live together until the murder investigation was completed.

“Are you okay?” Youngjae enquired. Sun Hee’s hair was dripping with water. He assisted her in removing her coat and used the towel to wipe her hair. Sun Hee paused for...