Coliandro seems to be on the verge of positively concluding a gallant adventure. But, at the climax, Giacomino shows up at his house, sleepy, hungry and with handcuffs on his wrists. The motivation is incredible: Giacomino is accused of being the author of a series of brutal murders. To help his friend, Coliandro will have to hunt down the real serial killer.

At the Questura Coliandro meets Asmareth, a young and beautiful Eritrean cultural mediator who works for the police. Believing her to be an illegal immigrant, Coliandro puts together one gaffe after another. To make up for it, he agrees to help her in a research that the girl is doing on illegal work. Coliandro and Asmareth thus unmask a gang that organizes "manhunts" for bored provincial rich people.

Aurora, the beautiful and intelligent daughter of De Zan, falls in love with Coliandro. When the man wakes up from his coma, he finds the Inspector invited to his house for dinner. Meanwhile, the team investigates a mysterious man, Salvatore Maria Moneta, known as "the Ghost" who, thanks to his quick-change skills, always manages to escape the handcuffs.

Following a fall, Coliandro loses his memory and temporarily becomes a real tough guy, joined by a young nerd in the hunt for a band of international terrorists.

Coliandro has to protect Giacomino, a peculiar, funny and ingenious character who has seen something he shouldn't have seen and who is threatened with death.

Coliandro must defend Remedios, a beautiful deaf girl, the only witness to the trafficking of a Latin American gang.

Coliandro answers the mysterious phone call from a sensual female voice who tells him that there is a bomb ready to explode if he - and only he - will not rush to defuse it. But the bomb ready to explode is not just one.

Kayo, a young Japanese doctoral student in art history, is an involuntary witness of a ruthless execution. She casually runs into Coliandro, who decides to protect her and hide her at her house with Kenzaburo, her brother. The man, who arrived from Japan in defense of his sister, is a former repentant of the yakuza, the fearsome Japanese mafia, which is hunting them.

Coliandro comes across Francesca Maria, the elegant and refined curator of a museum able, with her seductive qualities, to always get what she wants. Dazzled by the woman, the Inspector has to face Masino, an unscrupulous art dealer with a disturbed personality.

Natasha, a beautiful international killer, arrives in Bologna chased by secret services from all over the world. Coliandro will have to defend her from them... and himself from her.

Coliandro is contacted by a girl who needs help: her boyfriend disappeared after stealing a smartphone and finding footage of a gang of Russian criminals inside. The young woman turns to the inspector because she often hears him mentioned by her aunt, the deputy prosecutor Longhi, who however believes that Coliandro is not a good policeman.

During the security service at the city stadium, Coliandro and agent Balboni arrest an ultra who had tried to stab a policeman: terrified of ending up in prison, the boy collaborates and provides the policemen with some important information.

Coliandro witnesses a clandestine race between two motorcyclists but one of them loses control and causes the other to fall, who is killed. The inspector and Buffarini manage to save the motorcyclist responsible for the accident and find refuge in the police station but will have to deal with the bloodthirsty boss of the area, brother of the deceased pilot, who seeks revenge.

Coliandro is forced to be Paffoni's dance partner for one evening. To escape the thankless task, he finds himself investigating the murder of a young singer. To help him there is not only Paffoni, an experienced dancer, but also Natascia, the new young and beautiful singer of the smooth orchestra led by the shady Vasinto and his wife Ersilia called "Vagona".

The husband of an old Coliandro professor is killed inside the University of Bologna. The woman is accused of the murder due to the constant escapades of her husband: did she really go like this?

Coliandro believes that Gamberini has relapsed into the old habit of gambling and, trying to help his friend, infiltrates a clandestine gambling ring. In doing so, however, he blows up an investigation already underway promoted by Longhi and puts Giacomino, who he has hired as a consultant, Gamberini and himself in grave danger. Thanks to the help of Ambra, the girlfriend of one of the criminals, the inspector still manages to get away.

Chief Inspector Vittoria Martello asks Coliandro to join the "Team", a team of superpolicemen who are opposed by Gamberini and other colleagues for their brutal and unorthodox ways. And in fact, thanks to Coliandro's entry into the Team, it turns out that the group is nothing more than a new gang of drug dealers and exploiters inspired by the action of the Banda della Uno Bianca.

As punishment, Coliandro was transferred again, this time to the boring dog department. Here her sister comes to visit him, very worried about her daughter Angelica, who is dating a boy close to a satanic cult.

After shooting two boys, Coliandro is forced to attend a beautiful psychologist of the Ministry, engaged in the recovery of agents more prone to the use of firearms.

Coliandro meets Thea, an ironic and provocative investigative reporter who, together with "Cinno", a young hacker, is investigating the affairs of Roman Kolas, an Uzbek entrepreneur who conducts very shady business under the facade of philanthropy.

Coliandro investigates together with Jamila, a young and brilliant agent of the French services, on Tarantola, an apparently perfect policeman who, through the fixer "Don Lurio", is the terminal of a gang of corrupt agents.

Coliandro gets involved in a bank robbery in the center of Bologna. The three robbers, young and inexperienced, are soon rendered harmless by three hostages, who, in turn, take the other people hostage.

Agent Gargiulo shows up at Coliandro's house in the middle of the night, drunk and with a bloody knife in his hand: the inspector tries to reconstruct what happened, but it doesn't seem easy.

A young Muslim girl shows up in Coliandro's office to report the sudden and mysterious disappearance of her father. Reluctantly, the inspector still decides to do some investigation around the city.

During a nocturnal chase in the streets of Bologna, a girl steals his gun from Coliandro. While trying to track down the unknown, the inspector comes across a dangerous criminal organization.