Wu Kaile is a policeman who suffered severe physical and mental injuries while investigating a serial murder case and went abroad for six years of psychological treatment. One day, he received an anonymous letter and decided to return to China to investigate an old case left over from that year. A series of coincidental events made him gradually realize that the murderer of the case he experienced that year was not his deceased friend, but himself...
One sentence introduction: I have an incurable disease, symptoms: I like you
Intention: