None of the people behind the door, including Qin Yong, went up to the rooftop. They all looked eagerly at Lu Chuan.
"Is it possible that we guessed wrong?"
The rooftop is only two or three hundred square meters in size, and you can basically see everything at a glance.
If there are drag marks, logically speaking, it would most likely start from the door and extend to the edge of the rooftop.
But now, everyone sees nothing in front of them.
"Let's wait a moment. Didn't Old Liu take the spectrometer? Let's see if it works."
The whispers of the others didn't distract Lu Chuan.
Solving a case is just like this; making mistakes is, of course, possible.
But you can't refrain from guessing or thinking just because you might be wrong.
Moreover, Lu Chuan was originally somewhat mentally prepared for this possibility.
If there are no drag marks on the rooftop, there are basically two possibilities.
