Detective Pux is an expert in detecting lies and deception. One of the key techniques he uses is called statement analysis. This involves analyzing the words and phrases that a person uses when they are communicating, in order to identify inconsistencies or contradictions that may indicate they are lying.

Another technique that Detective Pux uses is to observe the nonverbal cues of a person when they are communicating. He looks for signs of anxiety, nervousness, or discomfort that may indicate that a person is lying. For example, a person may fidget, touch their face, or avoid eye contact when they are lying.

Detective Pux also uses a method called cognitive load analysis. This method uses the principle that when a person is lying, their brain has to work harder to come up with a false story. As a result, their cognitive load increases, which can be observed through changes in their speech patterns, body language, and other behavioral cues.

Another key technique that Detective Pux uses is called the Reid Technique. This is a method of interviewing and interrogation that is designed to elicit a confession from a suspect. The technique involves building rapport with the suspect, and then using psychological tactics to encourage them to confess.

Finally, Detective Pux also uses polygraph examinations, also known as lie detector tests, to help confirm whether or not a person is lying. While these tests are not always 100% accurate, they can provide valuable additional information that can help to confirm or refute a suspect's story.

In summary, Detective Pux uses a variety of techniques to detect lies, including statement analysis, observation of nonverbal cues, cognitive load analysis, the Reid Technique, and polygraph examinations. By using a combination of these methods, he is able to accurately identify when a person is lying and gather the necessary evidence to solve a case.