Kill Sera Sera

On a Leap Day four years ago, Sculptor Shaw Ruo-Yun's daughter, Sera Sun, was killed and mutilated. Her dismembered limbs were found to be clad in stockings. The police, despite constant pressure from Ruo-Yun, were unable to find the culprit. Ruo-Yun took matters into her own hands and created an exhibition as a memento to her late forgotten daughter, as a way to call out the murderer. A few days later, a young female corpse was found with her limbs intact, but similarly to Sera's death, her legs were clad in stockings.

Da-Shu and Guo-Guang found out that the last person the latest murder victim was in contact with was Ruo-Yun's younger son, Shan-Wen! The duo turned up at the doorsteps of the Sun family to question him. Guo-Guang, the young police officer revealed looks of distraught upon arriving at the residence. They requested for Shan-Wen to undergo a DNA test to cross-match with the semen sample they had discovered in the victim body. Ruo-Yun protested against the test but her husband, Allan, agrees to cooperate. The next morning, another female corpse was found, mutilated with stocking-clad limps…

Allan learnt that his wife had sold herself in exchange for her exhibition. He lashed out on Ruo-Yun who then tried to report Allan for domestic abuse. She met Ya-Ge outside the police station. His words convinced Ruo-Yun and she decided to not report Allan. Guo-Guang discovered Sera's account under the name of "Freedom" on the porn site that Cindy was active on. Turns out, Guo-Guang knew Sera all along!