Jane begins to investigate and discovers that the girl was Natre (Achita Sikamana), a shy girl who had attended the same college as Tun. After confronting Tun, Tun admits that he and Natre were in a relationship, which Tun had kept secret from his friends. Natre threatened to commit suicide when Tun broke off the relationship.
Tun starts to be haunted by Natre's ghost so he and Jane visit Natre's mother, where they find the decaying body of Natre in her bedroom, learning that Natre had committed suicide. Back in Bangkok, Tun's friend, Tan, commits suicide, jumping from his apartment balcony. Tun discovers that his two other close friends from college have also committed suicide. Believing that they have been coerced into doing so by Natre's ghost, Tun becomes convinced that he will be next.
