There were seventeen consecutive murders under the moonlight, and next to each corpse was a lie engraved on a silver coin. The victim in the seventeenth case, Shen Yanzhi, died in his study. His wife Wen Ruotong claimed that she was admiring the moon on the balcony at the time of the incident. However, Su Wantang discovered that an old diary she leaked many years ago appeared at the crime scene - it was a relic of her partner before he died in the line of duty. Joining forces with detective Jiang Ci, Su Wantang must break through the web of lies spun by a psychiatrist, stepdaughter, forensic examiner and judge. Behind each lie lies a deeper truth: the murderer may have been by her side all along.
