The Fantastic Four star's actress wife Alice Evans broke the news to fans in a message posted online, and Gruffudd later admitted he was "shaken up" by the decision.

Gruffudd had hoped to make a comeback playing an immortal medical examiner in the show following a series of flop projects including his drama with Sarah Michelle Gellar, Ringer, which was also cancelled after one season.

In a post on Instagram.co, the actor writes, "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 thought we were in with a pretty good chance. But sadly no, this time the cards weren't dealt in our favour. Show business is like that. Hell, life is like that... I asked Alice to send out the sad news because I was a little bit shaken up and needed time to gather my thoughts... It's been an incredible, wonderful year, one that I will never, ever forget... Thanks again a million times for your unwavering support."

Prior to landing the role in Forever, Gruffudd admitted he was struggling to find his place in Hollywood, saying, "I'm auditioning for dozens of parts at the moment, but I'm just not getting them. I can't play someone who's 30 anymore... maybe 35 at a push. So it's difficult, especially when have to provide for your family - and, unfortunately, I'm the one shouldering all that responsibility right now."