Ep 4. Nobody Knows Your Mask

In the fourth episode of the first season of the thrilling anime series Psycho-Pass, titled Nobody Knows Your Mask, the story progresses as the detectives who are working to solve a string of crimes come closer to understanding the murderer’s method of operation.

The main protagonist of the show is a young detective named Akane Tsunemori, who is part of the Public Safety Bureau’s Criminal Investigation Division. She is joined by a team of detectives including her senior colleague, Shinya Kogami, who has a ‘hue’ that is clouded due to a traumatic past. Together, the team investigates the serial killings that have been happening in the city.

As the episode begins, the Public Safety Bureau has identified a possible suspect, Masatake Mido. The detectives track him down and arrest him, but their investigation suggests that he was framed for the crime. This leads the team to dig deeper and find out who the real culprit is.

Meanwhile, a new character is introduced in this episode, a masked vigilante known as The Rikako. The Rikako is an unknown entity who is attacking innocent people around the city. The detectives discover that The Rikako is motivated by a belief that human emotions are impure and seeks to purify them by killing people that display negative emotions. The team must find The Rikako and stop their killing spree before they claim more lives.

The detectives soon discover that The Rikako is a student who attends the same school as the murder victims. As they dig deeper into the case, they uncover a disturbing connection between the victims and their murderer. The detectives realize that The Rikako is choosing their victims based on their Psycho-Pass readings, a system that determines a person's likelihood of committing a crime.

The detectives race against time to stop The Rikako before they strike again. Through their investigation, they find out that The Rikako has been manipulating their own Psycho-Pass readings, which allows them to continue their killing spree without being detected.

As the case progresses, Akane struggles with the morality of the system she works for and the actions of her team. She questions whether the Psycho-Pass system, which determines a person's likelihood of committing a crime, is just and whether it should be the basis of all judgments.

In the final moments of the episode, the team is faced with a difficult decision. They must decide whether to pursue The Rikako, who is now at large, or to focus on their original case, which involves the framing of Masatake Mido. The detectives know that if they make the wrong decision, more innocent lives could be lost.

Nobody Knows Your Mask is a thrilling and thought-provoking episode that raises many moral questions. The show continues to explore the dark side of a society where crime is predicted and prevented using advanced technology, and the high cost that comes with it. The characters continue to face moral dilemmas that challenge their beliefs and test their loyalty. The episode ends on a cliffhanger, leaving viewers eagerly waiting for the next installment of the series.