R.I.S. - Delitti Imperfetti (English: R.I.S - Imperfect Crimes) is an Italian television series, created in 2004 by Pietro Valsecchi, broadcast since January 2005 on Canale 5. The title, where R.I.S. is an acronym for Reparto Investigazioni Scientifiche (an actual, real-life unit of the Carabinieri, the Italian gendarmerie), could be approximately translated into English as Unit of Scientific Investigations: Imperfect Crimes. As the title indicates, the series is a crime drama, focusing on the scientific aspects of crime investigations, in a similar vein to the popular American TV series CSI: Crime Scene Investigation (though RIS is not a remake thereof).