Death note(movie)have episod 3?

No, there isn't... but there's a film or tv series about L specifically in production right now. Maybe you're talking about this one?

Hi Kitx, I know what you mean by movies that just don't tell you enough story before it ends. I am the kind of a person that don't mind using my imagination when it comes to movies and rewriting their endings, but I prefer that the film maker do their job and tell a good story in the movie without me having to add more to it on my own.