At night, a full moon hung in the sky, its bright moonlight illuminating the road.
On Kelm Street, a teenager wearing headphones was cycling from east to west.
The youth had dark skin and was carrying a heavy-looking brown backpack on his back.
The night wind was a bit chilly, and there were no pedestrians in sight, only the occasional car passed by.
Up ahead was a crossroad with no streetlights, the teenager looked left and right, saw no cars on the road, and proceeded to cross directly.
Suddenly, a black Volkswagen sedan came up from behind and struck the cycling teenager from the side.
With a "bang!", the teenager was flung into the air and crashed heavily onto the ground.
...
The Robbery and Murder Department's first squad.
Luke held the morning meeting as usual, standing beside the whiteboard, marking up the newly obtained clues.
At this moment, the whiteboard displayed two tree diagrams, each topped with the name and photo of a victim.
