The reunion between Jiang Xu and Xia Wan was hidden next to a corpse in a secret room.
As a former criminal investigation technical backbone, Jiang Xu saw the key to the scene at a glance - the smart password lock on the door had only the fingerprints of the deceased and Xia Wan. But Xia Wan had a perfect alibi, and this fingerprint became a "game mark" carefully left by the murderer.
The murders that followed one after another were exactly the same: the combination locks at each scene were covered with strange fingerprint stickers, and the owners of the fingerprints were all people related to the old cases ten years ago. Jiang Xu relied on technology to decrypt the lock code, and Xia Wan used profiling to reconstruct the murderer's psychology, but found that every time he got closer to the truth, a new "fingerprint suspect" would die.
When the evidence box from ten years ago was opened, the fingerprints on the combination lock at the bottom of the box exactly matched those left by the murderer. Is this death game in which fingerprints are pawns revenge or frame-up? Jiang Xu stared at the old scars on Xia Wan's palm, and suddenly realized that they were already in the game.
