Police interrogation, as a crucial phase in legal proceedings, represents a significant component in achieving justice and fairness. Over the years, legal regulations governing this process have evolved, shaped by societal, cultural, and technological changes. The reflection of these changes is evident in adaptations to laws that regulate the interrogation procedures of suspects in various states. This paper aims to explore the evolution of the legal framework encompassing police interrogation, with a particular focus on changes resulting in an emphasis on protecting the rights of suspects and accepting defensive interrogation methods in the contemporary legal profession. Throughout history, the legal frameworks shaping police interrogation have undergone fundamental transformations. Earlier approaches were often accusatory in nature, emphasizing the attainment of confessions from suspects as a priority. However, with growing awareness of human rights and the need for justice, lawmakers redirected their focus toward protecting the rights of suspects. This shift is evident in the recognition of defensive interrogation methods that allow the suspect more active participation in the interrogation process, thereby safeguarding their fundamental rights. Nevertheless, a key aspect of ensuring the credibility of the judicial process in the modern era has become the ethical approach to interrogation. In addition to preserving the rights of suspects, an ethical approach contributes to the credibility of the information gathered during interrogations. The importance of information credibility cannot be overstated, as it contributes to creating an objective and truthful representation of events, ultimately ensuring a fair trial and the making of correct decisions. Maintaining high ethical standards in suspect interrogation not only preserves the integrity of the judicial system but also reinforces citizens' trust in the fairness of the legal process. The significance of understanding the psychological aspects of communication and carefully monitoring the reactions of suspects during interrogations has never been more crucial. Knowledge of verbal and nonverbal cues and their interpretation has become essential elements in ensuring a just procedure. In today's society, communication plays a crucial role in exchanging information, understanding emotions, and interpreting complex ideas among individuals. However, communication is not limited to verbal expressions alone; it also encompasses a broad spectrum of nonverbal elements that contribute to a deeper dimension of interaction. This paper focuses on analyzing communication, both verbal and nonverbal, in the context of police interrogation of suspects.