 Di Leo's last film produced by his company Duania cineproduzioni 70 was "Rulers of the City" in 1976.He continued with a few more films after with the "film noir" "Blood and Diamonds", the erotic drama "To Be Twenty" and "Madness" ins 1980.Di Leo worked in television in the 1980s, starting with the television series "L'assassino ha le ore contate", which involved six one-hour long made-for-tv films produced by RAI Uno which as of 2013 are unreleased.