The Lie Detective(2021)

The Lie Detective is a crime series that reopens a cold case spanning twelve years. A serial killer who targeted society's most vulnerable victims eluded capture through cunning and careful planning. Detective Ling Bin died pursuing the main suspect, leaving the case unsolved. Now his daughter Ling Ran, a polygraph expert at the Criminal Police Technical Division, uses lie detection technology to crack major cases. Working alongside Chen Hu, head of the Interpol Crime Unit, Ling Ran channels her investigative skills toward solving the murders that claimed her father's life. The series blends procedural investigation with personal redemption as Ling Ran seeks justice for both the victims and her family's unfinished business.