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Ioan Gruffudd and co-star Alana De La Garza attend a panel for "Forever" during the Television Critics Association Cable Summer Press Tour in Beverly Hills on July 15, 2014. Gruffudd took to Instagram to thank fans after the ABC series was canceled. Reuters

Fans of “Forever” received some disappointing news this week. Just days after the Season 1 finale, ABC announced it has decided to cancel the supernatural drama. The television show starred Welsh actor Ioan Gruffudd as immortal medical examiner Dr. Henry Morgan and only ran a single season. After learning of the disappointing news, Gruffudd reached out to his fans in a touching post on Instagram.

“Tonight, as you all now know, I received a phone call that I was hoping not to receive, and to be honest I really wasn’t expecting it. I knew the numbers hadn’t been great, but I also knew the studio and the network both loved the show, and of course that it had an incredible fan base…so I thought we were in with a pretty good chance,” Gruffudd wrote. He added that “show business is like that” and told viewers he read thousands of tweets from fans who loved the show.

The series' cliffhanger left many fans hungry for answers. The show ended its freshman season on Tuesday with a final confrontation in an abandoned subway station between Gruffudd’s character and fellow immortal Adam (Burn Gorman), resulting in Adam being paralyzed and Henry disappearing. Detective Jo Martinez (Alana De La Garza) found Henry’s pocketwatch and an old photograph of his family at the scene and confronted him with the evidence.

"Forever" creator Matt Miller had a few ideas for Season 2. He was interested in exploring the cliffhanger left at the close of Season 1 and the potential of more characters discovering Henry's immortality secret.

"There will certainly be mythology brought into Season 2. How Adam will be utilized is not completely worked out yet, but we certainly feel like there’s more story to tell with Adam," Miller told TV Line prior to the cancellation news. "We also want to introduce new characters that add some fresh blood to this world and be able to work in the idea, not only of the mythology, but in the romance of the series and other stories that we want to pursue."

Despite the surprise cancellation, Gruffudd, 41, said he was overcome with gratitude. He called the experience “breathtaking” and said the show’s fans “held me up when I thought I could no longer go on.” The father of two said the work hours were often long, but he was motivated by the unwavering support of the show's loyal viewers.

Gruffudd called the role of Dr. Henry Morgan the "role of my dreams." He said he was grateful he'd "been given the chance to bring Henry to life.”

“Forever” first aired on Aug. 26. The pilot was available early through ABC’s website and the series ran from Sept. 22 to May 5. Reviews were mixed. Rotten Tomatoes gave the show a mediocre rating of 57 percent.