L (using the alias Ryuga Hideki) is already there. For Light, this is a moment of extreme tension—if Misa sees L 's face, she can kill him with her Shinigami eyes.
The episode's climax centers on the physical evidence L has meticulously gathered: Death Note Episode 15
L publicly declares to the Task Force that if he dies within the next few days, Light Yagami is definitively Kira . This bold move effectively prevents Light from using Misa's eyes to kill him immediately. The Downfall: Misa’s Arrest L (using the alias Ryuga Hideki) is already there