The National Police Investigator of the Republic of Indonesia, based on Article 7 paragraph (1) of the Criminal Procedure Code, has the authority to determine someone as a suspect for a criminal offense. The implementation of this authority is not absolutely; however, there are several restrictions and parameters, as established both through the Criminal Procedure Code or through the Decision of the Constitutional Court of the Republic of Indonesia Number 21/PUU-XII/2014 dated April 28, 2015. Moreover, restrictions and parameters require an interpretive-cognitive touch from the investigator itself. Thus, there is often a mistake in epistemology or mistaken knowledge in issuing and issuing a decision to determine someone as a suspect. Therefore, the suspect still occupies the Binary Inferior (The Other) opposition in the process of criminal justice practices in Indonesia. This research tries to question the wrong epistemological model in determining the suspect in the realm of investigation. The research methods used are legal methods with the Trichotomy Relationships approach, Communication Speech Acts approach, and Critical Discourse Analysis approach. The results of this study show that there is a state of superior binary opposition (the central) from the investigator to decide by ignoring the legal rights of someone who was used as a suspect.