This results in him being punished, taken off field work and assigned to “boring” desk jobs such as issuing passports.

During his unauthorized investigations he is often helped by two of his colleagues, Trombetti and Gargiulo, whereas his superiors dismiss his efforts and consider him a joke and a nuisance.

Coliandro seems to be able to close every case with a combination of stubbornness and luck but at the end is always punished due to his “unprofessional behavior”.

One notable characteristic of the "Coliandro" series is that all episodes are shot in the city of Bologna or its immediate surroundings, a wealthy town which is not really known for crime.

Giampaolo Morelli plays the main character (Coliandro), whilst Alessandro Rossi (commissioner De Zan), Veronica Logan (prosecutor Longhi), Paolo Sassanelli (Inspector Gamberini) and Giuseppe Soleri (Agent, and then Inspector, Gargiulo) are the main regulars of the series.