Chapter 867: Fish in the Pond

The dilapidated factory building.

No windows, no doors, no machines, no ceiling, no floor, dirty as a black plum lying across a small hill. There's a road up the hill and a slope down the hill, with escape routes in all directions, making it truly seem like a fitting place for a drug lord's meeting.

Jiang Yuan put on shoe covers, foot covers, and a head cover at the door, first peeked inside the factory, then circled around the building before returning to the main entrance. Without any hesitation, he activated the skill "Temporary +1" and assigned it to Crime Scene Investigation (Level 5).

This task was by no means simple; in fact, it could be described as the greatest challenge Jiang Yuan has faced in the area of crime scene investigation.

For he wasn't looking for a specific person's footprint or fingerprint; his task was to prove that someone's footprint or fingerprint was not present.

In other words, proving an "absence."