The mission seven years ago was classified as "all personnel were killed", and the files were kept and filed normally, with complete records.
But the only loophole is that a person who should have disappeared left traces.
His reappearance brings old cases to the surface again.
Gu Xing returned to the broken clue.
And beside him, there is an unidentified partner.
Words of advice.
Calm, sharp, good at discovery and gentle disguise.
At first it was just cooperation, then gradually it became parallel.
Gu Xing began to realize that this person was more difficult to judge than the case.
What's even more dangerous is that some changes do not come from cases.
Intention: Seven years of obsession will eventually lead to an answer, and the real redemption is to learn to reconcile with the past.