Breaking Bad creator Vince Gilligan wants to keep working on the show, even if it ends after the upcoming season.

The hit drama, starring Bryan Cranston as a high school chemistry teacher who turns to making meth, will end after its fifth season this fall.

Gillian isn't done with the property, however, and is working non-stop on a spin-off featuring Bob Odenkirk's character from the series, Saul Goodman.

Gillian doesn't even have a TV deal, but that isn't stopping him from working 24/7 on developing the show. He tells Yahoo!, "Nothing's written in stone, but we are working away on it. My writer and producer, Peter Gould, who created the character of Saul way back in Season 2, he and I have been talking, trying to figure out what a Saul Goodman show would look like. What would be the details of it, the particulars of it? And we're getting together to hash that out every chance we get..." 

He also says he hasn't decided whether the story will continue from the end of Breaking Bad or re-boot the storyline.

He adds, "We just have to figure out exactly what kind of story we're telling. Is it a story about his creation of his own character? Because Saul Goodman, as he explains in his first episode, is not his real name... Do we tell the story of his origins? We're still trying to hash that out. But there are a lot of fun possibilities."