Many of the town's citizens suffer from food poisoning. Police officers investigate and find out that the cause are poisoned apples sold by the Di Giacomos, a family of farmers. After some interrogations by Captain Anceschi, it seems that the family is not responsible for the case after all. Don Matteo's investigations lead him to a seasonal worker Di Giacomo's who seems to have motive.

A young soccer player dies of a drug overdose. Was it an accident or murder? The first person suspected by police officers is the owner of a tattoo shop who was in trouble with drug abuse before. The woman denies to be involved and Don Matteo tries to convince the police.

Nino Coronna is found in a garden of a villa, next to a corpse. The victim is the owner of the house, Giulia Chimenti's husband. Nino seems to be guilty and is immediately accused of homicide. Maresciallo Cecchini has to investigate alone because Captain Anceschi is a 'special friend' of Giulia. When Anceschi seems to be involved in the homicide, Don Matteo and Cecchini have to uncover the truth.

Monica, who believes to have cancer, meets the healer and magician Kaspar, who has a reputation of taking advantage of people in distress. After several healing sessions with Kaspar, Monica's medical condition improves. It's a miracle - and attracts many people to Kaspar's 'practice'. Police officers question Kaspar, but only Don Matteo's help leads them on the right track

Un critique gastronomique qui fait la pluie et le beau temps au travers d'un guide qu'il publie, meurt assassiné dans d'étranges conditions. Le seul témoin de l'affaire est un vieux clochard qui n'a plus toute sa tête

Au cours d'un entraînement de boxe un jeune homme meurt d'une hémorragie cérébrale. Son entraîneur qui lui a porté le coup est effondré et se sent responsable. Mais il se pourrait bien que ce soit un coup qu'il aurait reçu la veille qui est à l'origine de son décès.

Don Matteo is on a bus trip when a rich elderly lady is given a fatal shove. Don Matteo watches the scene but is too far away to recognize the guilty. Police investigations lead to the victim's nephew, who sold merchandise on the bus. Don Matteo finds out that the nephew is interested in more than just the inheritance.

A young boxer dies during training. Accident or homicide? The boy's trainer is accused of the crime. Don Matteo tries to solve the riddle.

Anceschi est invité à une réception organisée par une camarade de collège. Le mari de celle-ci est assassiné dans son laboratoire spécialisé dans le matériel biologique humain destiné à la procréation médicalement assistée...

Tarek, an immigrant, wants to traditionally arrange a wedding for his sons, who disagree with this tradition. To avoid the marriage, Mohammed commits a theft. When his brother Abdul gets involved in a violent crime, Don Matteo begins to investigate.

Sergio is run over by a car. His fiancée Angela mourns his death but decides to begin a new life. After joining a music band, she receives anonymous threats: Someone wants her to leave town. Police investigations lead to a young man who seems to be involved in the car accident. Don Matteo has to solve the case.

Le président d'une équipe féminine de volley ball est assassiné le soir d'une victoire. Une ex-joueuse désormais paraplégique à cause de ce dernier est inculpée d'homicide. Don Matteo convaincu de son innocence entre en jeu

During a walk in the woods, Nerino falls into a 'hole' and discovers an old Etruscan tomb, filled with treasures. When police officers arrive, the treasures have disappeared. Suspicion falls on Lanza, a surly man who was involved in a robbery before. But Don Matteo suspects a certain Mr. Todi.

Deux jeunes Marocains sont partagés entre l'amour qu'ils portent à leur père, un veuf qui s'est tué à la tâche pour élever correctement ses enfants, et le poids des traditions humaines

Une jeune femme est assassinée alors qu'elle venait annoncer à Don Matteo son intention de se séparer de son fiancé pour vivre avec un ex-repris de justice. Natalina se trouve être un témoin essentiel de l'affaire

A young woman is killed in her home. Natalina, the house keeper, can aid police investigations because she saw Giovanni Antonelli escaping from the house. The man admits that he had a relationship with the victim but refuses to confess to the crime. Police investigations move to a company, owned by the victim's 'real' boyfriend.