L has twenty-three days to live, and twenty-two days to save the world. In an alternative continuity in the Death Note setting, ace detective L's name has been placed in a Death Note. He has twenty-three days to bring a terrorist group to justice, or they will use a deadly new virus to change the world... by killing off most of humanity. In an alternative continuity in the Death Note setting, ace detective L's name has been placed in a Death Note. He has twenty-three days to bring a terrorist group to justice, or they will use a deadly new virus to change the world... by killing off most of humanity.