A 0.ª temporada de Além da Imaginação estreou a 24 novembro 1958.

A 1.ª temporada de Além da Imaginação estreou a 2 outubro 1959.

Temporada 1 - Gravada em 1959 - 37 Episódios sendo o episódio 0 (zero) uma apresentação do seu idealizador Rod Serling.

A 2.ª temporada de Além da Imaginação estreou a 30 setembro 1960.

The second season of The Twilight Zone aired Fridays at 10:00–10:30 pm on CBS from September 30, 1960 to June 2, 1961. There are 29 episodes.

A 3.ª temporada de Além da Imaginação estreou a 15 setembro 1961.

The third season of The Twilight Zone aired Fridays at 10:00–10:30 pm on CBS from September 15, 1961 to June 1, 1962. There are 37 episodes.

Continuing with Marius Constant's theme music, a different set of graphics was used for the opening, consisting of a rotating cone with concentric circles suggesting a spiral, receding into a star field. Rod Serling's narration from the second season was used, with the verse "That's the signpost up ahead" taken out:

"You're traveling through another dimension. A dimension not only of sight and sound but of mind. A journey into a wondrous land whose boundaries are that of imagination. Your next stop—The Twilight Zone." Some subtle changes in the opening's acoustics were made beginning with Person or Persons Unknown.

A 4.ª temporada de Além da Imaginação estreou a 3 janeiro 1963.

The fourth season of The Twilight Zone aired Thursdays at 9:00–10:00 pm on CBS from January 3 to May 23, 1963.

This season broke with the previous seasons in presenting hour-long episodes instead of the earlier half-hour episodes. A very different and more complex set of graphics was used for the intro, and Rod Serling's narration changed from the earlier seasons as well:

"You unlock this door with the key of imagination. Beyond it is another dimension. A dimension of sound. A dimension of sight. A dimension of mind. You're moving into a land of both shadow and substance, of things and ideas. You've just crossed over into the Twilight Zone."

A 5.ª temporada de Além da Imaginação estreou a 27 setembro 1963.

The fifth and final season of The Twilight Zone aired Fridays at 9:30–10:00 pm on CBS from September 27, 1963 to June 19, 1964. It featured the same intro as the fourth season, but reverted to the original half-hour format.