Constantine is halfway through season 1, and fans are beginning to worry about the series' future.

'Constantine' Not Canceled Yet; Cast Teases Finale, Rallies Fans To Save Series

NBC halted production on the Hellblazer adaptation in November, giving John Constantine (Matt Ryan) only 13 episodes to cement a place in the hearts of fans. The announcement sparked rumors of cancelation, but actress Angelica Celaya believes Constantine's fate is not yet sealed.

"We have up to episode 15 in our hands, and we wish you guys could see what a riot that would have been. That's going to get reworked for season two," Celaya informed Comic Book Resources. "I got contracted for 13 episodes. I didn't get contracted for 15, 19 or 20. The funny thing is, everybody got scared. 'They are canceling Constantine.' Well, according to my contract, I was only scheduled for 13."

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One of the reasons for the short first season could be due to the series' CGI budget.

"You see our episodes and the money going into those graphics and CG," Celaya explained. "When you are spending a pretty dime making these graphics look like you are going to the movies, it adds up."

As for Constantine's initial low ratings, Celaya is not overly worried.

"It's like, 'Wait a minute. There are other series that started off a little slow, trying to see what they were doing,'" the actress told Comic Book Resources.

For the moment, all fans can do is keep tuning in, giving the series a rating boost as it airs the season's final episodes.

Catch Constantine Fridays at 10 p.m. ET on NBC. Click the video below to see a preview for the series' next episode, "The Saint of Last Resorts."