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.”
S4 - E1In His Image Jan. 03, 1963
S4 - E2The Thirty-Fathom Grave Jan. 10, 1963
S4 - E3Valley of the Shadow Jan. 17, 1963
S4 - E4He's Alive Jan. 24, 1963
S4 - E5Mute Jan. 31, 1963
S4 - E6Death Ship Feb. 07, 1963
S4 - E7Jess-Belle Feb. 14, 1963
S4 - E8Miniature Feb. 21, 1963
S4 - E9Printer's Devil Feb. 28, 1963
S4 - E10No Time Like the Past Mar. 07, 1963
S4 - E11The Parallel Mar. 14, 1963
S4 - E12I Dream of Genie Mar. 21, 1963
S4 - E13The New Exhibit Apr. 04, 1963
S4 - E14Of Late I Think of Cliffordville Apr. 11, 1963
S4 - E15The Incredible World of Horace Ford Apr. 18, 1963
S4 - E16On Thursday We Leave For Home May. 02, 1963
S4 - E17Passage on the Lady Anne May. 09, 1963
S4 - E18The Bard May. 23, 1963