I am Lin Wan, a forensic doctor who works with corpses every day and has long been accustomed to the cold and darkness. Until that day, I was at the scene of the "Female College Student Falls Case" and found a man covered in blood - he was lying behind the water tank on the top floor with an injury on his forehead and a blank look in his eyes. He claimed not to remember anything. He only repeatedly grabbed the corner of my clothes and said, "Don't leave me."
The blood stains on his body partially matched the DNA of the deceased, and his pocket also contained the deceased's lost earrings. All evidence pointed to him as the murderer. But when I looked at his clean eyes, I somehow concealed his existence and took him home.
I gave him the name Gu Chen, and while helping him hide his identity and search for his memories, I also traced the truth behind the falling case. But as the investigation deepened, more and more murders occurred one after another: the strange "cross mark" on the wrist of the deceased, the missing murder weapon, the vague fingerprints related to Gu Chen left at the scene... Every clue was like a net, tightly entangling me and him.
What shocked me even more was that the methods used in these cases were exactly the same as the unsolved cases that cost me my partner three years ago. Gu Chen's memory fragments kept flashing back, including a burning warehouse, a bloody scalpel, and a recurring name - "Nightingale".
