When an accident causes Dr. McCoy to go temporarily insane, he escapes to a strange planet. There, the search party discovers a device left by a superior, vanished civilization, a time portal that plays the history of Earth for them - but then Bones jumps through it into the past, causing a change in history important enough to make the Enterprise vanish. Kirk and Spock, who fortunately made a tricorder recording, must attempt to go through to just before McCoy's arrival and stop him from changing history in the United States during the Great Depression, where they have no advanced technology available.
Did You Know?
Gene L. Coon
is mainly responsible for the small comical elements of the story, including the famous "rice picker" scene, which Harlan Ellison
reportedly hated. See more
During the early bridge scene, shots filmed from the front of the bridge clearly show a red uniformed female standing next to the center seat. When the shot switches to the view from the rear, she disappears, even though that section of the bridge is still in shot, and reappears when the view returns to the view from the front. In addition, Kirk looks different in the rear view shot, as if this section was filmed with a stand in for William Shatner
. See more
Spock... I believe... I'm in love with Edith Keeler.
Jim, Edith Keeler must die.
Script Supervisor is written as "SCPIPT SUPERVISOR...GEORGE A. RUTTER" in the credits. This happened on at least two other episodes in season one. See more
Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more
Written by Ray Noble
, Jimmy Campbell
and Reginald Connelly
(as Reg Connelly)
Heard playing from the radio repair shop (with an uncredited vocal performer) and later as part of Fred Steiner's instrumental score (also uncredited)
Due to copyright issues, this music was replaced on some releases in the 1980s and 1990s See more