Introduction Interrogating suspects to get the truth is one of the most complex tasks for law enforcement officers, especially in cases where there are no witnesses or a valid exhibit. The law enforcement officers are sometimes faced with a difficult task of proving that a particular suspect or witness is telling the truth on a given case or not. This has jeopardised the speedy and successful prosecution of criminal cases in the society. The acts of terrorism are on the rise, not only in Australia, but also in other countries around the world. According to Houston (2012), with the rising rate of terrorism in the country, the Australian Counter-Terrorism and National Security Agency has a big role of ensuring that criminal cases are successfully prosecuted in order to deter such acts from taking place again. The agency has been struggling with the criminal suspects who hold that they are innocent while the truth is that they are guilty. Without sufficient skills that can help to determine if one is telling the truth or not, cases of criminals walking free has been on the rise. At the same time, the society has criticised this agency for convicting wrong victims and finally sending them to prison while the real perpetrators walk free. Larner (2013) observes that the real culprit would come and testify against the innocent individuals, and because the officers lack the capacity to discern the truth from lies, the innocent individual would easily be sentenced for a crime that was never committed by them. Psychologists have been actively conducting research to come up with the psychological means that can be used by the interrogators to determine when one is telling the truth during the investigation or not. In this special report to ACTNSA, the researcher seeks to identify the latest research on the techniques available for the interrogators and their effectiveness in order to make appropriate recommendations for ACTNSA officers. Latest Research on Psychological Techniques of Interrogation Available and Their Effectiveness Recent researchers have been focused on coming up with more modern ways that interrogators can use in order to determine the truthfulness of the statements that are always given by the suspects or witness. In order to understand some of these new concepts developed by the recent scholars, the researcher will analyze these recent techniques in three categories. Recent research on the use of non-verbal cues to evaluate the truthfulness and detect deception Recent scholars still believe that non-verbal cues are effective during the interrogation process. According to McConville (2011), use of non-verbal cues has been considered as one of the best ways of determining when one is telling the truth or not. When interrogating a criminal or a witness, it is important not to have a general belief that the witness or suspect will be interested in protecting him or herself. For instance, there have been many cases where individuals would criminalise themselves in order to protect those whom they love. A mother may easily own up to a crime of a son just to allow the son have a second chance in life. How an investigator realises that the mother is criminalising herself is one of the important psychologica