It's About Time is an American science fantasy comedy TV series that aired on CBS for one season of 26 episodes in 1966–1967. Astronauts Mac McKenzie (Frank Aletter) and Hector Canfield (Jack Mullaney) travel faster than the speed of light, resulting in being sent back in time to prehistoric days where they have to adjust to living with a cave-dwelling family led by Shag/Shad (Imogene Coca) and Gronk (Joe E. Ross). Their children were 18 year-old Mlor (Mary Grace) and 14 year-old Breer (Pat Cardi). Tribe chief Boss (Cliff Norton) and his right-hand man Clon (Mike Mazurki) were always suspicious of the astronauts.