When does The Life and Times of Grizzly Adams return?

The Life and Times of Grizzly Adams is a 1974 independent feature film. The title character, played by Dan Haggerty, was loosely based on California mountain man John "Grizzly" Adams (1812–1860) The film's popularity led to an NBC television series of the same name. The series drew a 32% market share, a significant figure to this day.