Mia nonna poliziotto (i.e. "My Grandma a Policewoman") is a 1958 Italian comedy film directed by Steno and starring Tina Pica.
[1][2] The old grandmother Tina arrives in town to attend the wedding of his nephew Alberto with his girlfriend Ileana.
He goes to the police station to file a complaint and get the dear object back, but given the length of the investigation, he decides to carry out the search for the thief himself, combining a great deal of mess.
Eventually, by chance, he finds the thief, who lives in the same hotel, also managing to have an entire gang of criminals arrested.
The grandson Alberto can marry the beautiful Ileana and the grandmother Tina will be appointed, by merit, an honorary colonel of the female police.