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.
