Jiang Xia cleared his throat and said in a voice that had briefly returned to normal, "After killing Miss Taimei, the murderer placed her body on the roof of the RV. Then, while driving up the mountain, they only needed to find a way to make the body fall at a specific spot to create the illusion that 'Taimei crashed through the guardrail at the top of the cliff and fell.'"
"Also, the real crime scene should have been on the roof as well. The murderer only needed some excuse—say, that the sunroof was dirty—to get Miss Taimei to climb up and clean it.
"Then, while Miss Taimei had her head down wiping the sunroof, the murderer quietly approached from behind and struck her hard on the head with a blunt object like a stone, killing her."
As he spoke, Jiang Xia walked to the driver's seat of the RV and raised a hand to press a button.
A humming sound rose, and the sunroof slid smoothly shut.
Then, as everyone stared at it, they noticed in astonishment that as the sunroof extended fully, there was a black line drawn on its inner surface, parallel to the window frame.
The line was very straight, yet uneven—thick in some places and thin in others, as though it had been dripped on with an ink brush... But why would anyone climb onto the sunroof just to draw such a meaningless straight line?
Everyone stared blankly at the line, trying to guess what role it played in the Murder Case.
At that moment, a flashlight beam lit up and shone onto the sunroof.
"No, it isn't black—it's Red and Black." As the light brightened, Officer Sato's heart skipped a beat as she recognized it. "It's blood! Fresh blood shed when the victim was