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?
Hitler wasn't interested in wonder weapons because he thought Germany would win the war before they were ready. The V2 weapon for example was seen as nothing but essentially an artillery shell with a longer range and much higher cost
Only when Germany had to go on the defensive with Soviet counterattack and the United States entering the war did Hitler start giving the wonder weapons projects like the A-bomb (1942) and the V2 (1944) the funding long denied them. It such such that the best a conventional "dirty bomb" far weaker then that dropped on Japan was slated for 1946. More over the V2 simply wasn't able to carry such a weapon.
So by delaying the United States entry into WWII you ALSO delay the very factors that got the German A-bomb and V2 programs better funding. See more
[after coming out of a faint
The most common question to ask would be "Where am I?". I don't think I'll ask it.
The only possible answer would conclusively prove that I'm either unconscious or demented. This looks like old Earth around 1920, '25.
Would you care to try for '30?
I *am* unconscious or demented.
I have a friend that talks about Earth the same way that you do. Would you like to meet him?
I'm a surgeon, not a psychiatrist. I am Leonard McCoy, Senior Medical Officer aboard ...
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
Syndication versions since the early 1980s and most home video prints replace a recording of "Goodnight Sweetheart" heard in this episode with a generic instrumental track due to music rights issues. The original recording was heard in reruns prior to then and on an early 1980's VHS release by Paramount. The original version was restored when the series was released to DVD. See more
Spoofed in Red Dwarf: Tikka to Ride
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