The main objective of the existence of the Criminal Procedure Code is to provide guidance to the attitude of law enforcers in carrying out their duties and functions based on authority. However, in the trial process in the pre-adjudication domain, often the National Police Investigators and Public Prosecutors have an attitude that creates losses for someone who has the status of a suspect or defendant in defending his / her rights. The purpose of this research is to reveal the mode of behavior of the National Police Investigator and Public Prosecutor which harm the suspect or defendant in the pre-adjudication stage. This study uses a semiotic approach and critical discourse analysis to complement the legal research methods. The results of this study intend to show the existence of an instrumental communication model based on the trichotomy of the relation to prevent the suspect or suspect from being able to defend.