Core setting: The heroine receives a love letter from 20 years in the future, which predicts that she will die in a serial murder three months later, and the murderer is actually her husband.
Highlights: A dual-line narrative of suspense + romance, exploring fate and free will through the concept of "time folds", and the reversal of the ending involves the theory of quantum immortality.
Suspense line: The heroine Lin Xia receives a love letter from 2035, discovers her husband Zhou Yan's abnormal behavior, and gradually uncovers the tip of the iceberg of the serial murder case.
Romance line: The ten years of love between the two from school to the workplace are shown through flashbacks, interspersed with key props such as unopened wedding ring boxes.
Concept: suspense, romantic dual-line narrative