As the trial nears its end, the prosecution struggles to conclusively prove Chevalier is the masked killer. Kelly-Anne stages a calculated courtroom intervention by dressing identically to the murdered 13-year-old Camille Beaulieu, complete with orthodontic braces. When she is removed by security, Chevalier breaks his stoic facade to lock eyes and subtly wave at her. Consequently, Kelly-Anne is fired from her modeling agency.
Kelly-Anne subsequently enters a dark web auction where an anonymous hacker sells the missing Camille Beaulieu video. Needing funds, she plays an intense online poker game simultaneously, wins, and purchases the snuff film. After destroying her smart assistant Guinevere in a blender to avoid surveillance, she watches the murder in complete solitude.
Kelly-Anne breaks into the Beaulieu family home, takes selfies in Camille's preserved bedroom while wearing the school uniform, and leaves a flash drive containing the uncut video in Francine Beaulieu's room. Francine submits the USB to the police. The footage reveals Chevalier unmasking himself, providing undeniable proof of guilt and forcing him to enter a guilty plea. The film closes with Clémentine weeping on television as a disillusioned 'ex-groupie,' while Kelly-Anne vanishes into the shadows having crossed every ethical line to secure the truth.