Don Matteo is a thoroughly ordinary Catholic priest with an extraordinary ability to read people and solve crimes. He’s a parish priest who never met an unjustly accused person he didn’t want to help.
Giuseppe Lojacono, suspected of collusion with the mafia, is unfairly thrown out of from Sicily and send to Pizzofalcone (close to Naples), together with other police officers. There, they bring justice back where it was forgotten.
Marco, a television journalist, reads "red lies" on his teletext system in order to gather material on the homosexual world for a story he's working on. Unfortunately, he is implicated in a series of murders in which the victims are all gay. Marco becomes a suspect and is forced to investigate the crimes himself in order to prove his innocence.