Featured 36 episodes, including the pilot "Where Is Everybody?". It is often cited by critics, such as those at TV Insider , as the series' pinnacle, containing iconic episodes like "Time Enough at Last".
The original run consisted of . While most seasons followed a 30-minute format, Season 4 experimented with hour-long episodes before returning to the shorter runtime for the final season.
Continued the anthology's success with 37 episodes.
Switched to a 60-minute format for 18 episodes, which was less favorably received than the half-hour stories.
Introduced Serling’s on-camera appearances as host and the legendary theme music by Marius Constant.
Returned to the 30-minute format for its final 36 episodes. Themes and Impact The Twilight Zone (TV Series 1959–1964) - IMDb
