Since NBC announced that it was halting production on the freshman series after 13 episodes, many folks fear the worst even though it has no been cancelled and stars of the show are part of today's Macy's Thanksgiving Day Parade which is one way NBC hypes its television shows. So a second season is possible even if this move is unprecedented.
Executive producer Daniel Cerone took to twitter the other day, stressing that as long as the ratings continue to climb the show should get a second season. He even started a #SaveConstantine hashtag and pulled William Shatner into the fold.
So the show is not dead, but 100,000 signatures on a petition wouldn't hurt its chances either. To sign the petition, just click here.