In May of 1999, a young girl felt like she was being haunted in her nightmares. It led her to a police station in Hong Kong, where she confessed to witnessing and participating in the brutal torture of 23-year-old Fan Man-yee. Inside an apartment, authorities discovered her skull, sewn inside a Hello Kitty mermaid doll. This is the story of Hong Kong's most sadistic murder case in modern times.