Franco and Ciccio... Robber and Cop

Cristina lives a peaceful life until her older brother Ciro, who has to attend a trial, asks to spend house arrests at Cristina’s home.

Clara and Diego, under the guidance of the psychiatrist of a day rehabilitation center for disturbed people who attend, decide to transform the treatment center into a restaurant, involving all their other companions.

A vicious serial sex killer is on the loose, and landscape gardener and shop-window outfitter Loris is the prime suspect, thanks to his unfortunate habit of getting caught in compromising situations (for which there is always a totally innocent explanation that the police fail to spot). Undercover policewoman Jessica is assigned by eccentric police psychologist Taccone to follow Loris.

The day of Chief Constable Saracino begins badly when his new car is stolen. Then, in his office, he meets Alfredo Fiori who believes that his wife and her lover, a veterinary, are trying to murder him.

The marquis Galeazzo di Torre Alta is murdered by a mysterious killer who calls himself Diabolicus. His heirs are his three brothers and a sister, but all of them, with the exception of Monsignor Antonino di Torre Alta, are killed by Diabolicus. The police are unable to solve the case, but when Antonino gives his inheritance to Pasquale Bonocore, illegitimate son of his father and Pasquale is in prison and therefore can't be the killer, all the clues are in the hand of the police.