Capítulo 481: Chapter 442: The Nail

Changyang City Criminal Science Center.

An independent small building surrounded by lush greenery, an office environment with a pleasant temperature…

A serious-faced group clustered around Jiang Yuan and the evidence "long nail."

This was their most favorable piece of evidence obtained thus far. Just like the bullet in a shooting case, the long nail in this case carried everyone's hopes.

Besides that, the other pieces of evidence in the case were weak circumstantial evidence. Surveillance videos, fingerprints, footprints recovered, or some cigarette butts and bloodstains gathered at the scene were merely self-consoling, without the power to point to the murderer.