Patrick Duffy announced in 2012 that he wanted to bring back his short-lived 70s series "
Man From Atlantis".
At the time he said that he had completed the first draft of a novel, which picks up 15 years after the series and explains the never-before-known origins of Mark Harris.
He said that he wanted to write a trilogy and perhaps see the story adapted for the screen. The book came out in 2016 but the screen revival never happened.