In the deep ocean of the judicial world, there are two special navigators. They are Bill Tench, who is over forty, and Holden Ford, a former field agent.Their voyage is unusual. They are not traveling on rough seas, but on the undercurrent of the human heart.Their job is to delve deep into the inner world of criminals and explore the logic and motivations hidden behind the madness.

Bill Tench, this experienced speaker, has traveled to police stations all over the world, and his voice echoes in every speech.What he talks about is the detection process of those thrilling classic cases, as well as the criminal patterns extracted from countless cases.His story is the crystallization of wisdom and courage, as well as the embodiment of in-depth research on criminal psychology.

Holden Ford, a former field agent, encountered insurmountable obstacles while handling a case and was transferred to the same job position as Bill.However, this transition became a new starting point for his career.He began to work side by side with Bill to explore the secrets hidden deep in the criminal's mind.

Both of them had a strong interest in studying criminal psychology. They persuaded their leaders to set up a behavioral science department in the basement with the idea that only by understanding the mind of a madman can they better catch the madman.This department is like a laboratory for their minds, where they talk to criminals and try to decode their behavioral patterns and psychological structures.

As their work progressed, their team attracted more like-minded people to join them, including psychology professor Wendy Carr.Her joining has injected new vitality into the team and provided more theoretical support for their research.

In their daily work, Holden and Bill will go deep into the prison and have conversations with various perverted murderers.They try to find out the true thoughts and motives hidden in the words of these criminals.These conversations are sometimes sincere, sometimes hypocritical, sometimes full of passion, and sometimes full of banter.But no matter what, they all learned valuable information from these conversations, which helped them establish a complete psychological model.

However, as their work deepened, they discovered that things were not as simple as they initially imagined.They begin to realize that the inner world of criminals is much more complex than they imagined.The behavior of criminals is often the result of a combination of factors, not just a single psychological motivation.

In the process, they also constantly refreshed their understanding of “abnormal”.They found that even those criminals who were considered “mad” often had certain logic and rules in their actions.These discoveries have strengthened their belief that only by deeply understanding the inner world of criminals can we better prevent and combat crime.

As their work continues to achieve breakthroughs, their team gradually receives more recognition and support.Their research results not only provide the police with more clues for detection, but also provide society with a deeper understanding of criminal psychology.