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. Written by
Did You Know?
's script was unusable for the series for many different reasons. Gene Roddenberry
objected to the idea that drug usage would still be a problem in the 23rd century, and even present among starship crews. Also, the production staff was heavily against Kirk's final inactivity. It seemed that being unable to decide and act, viewers could never be able to accept him as the strong leader figure in later episodes. Elements, such as the Guardians and the Condor and its crew were simply impossible to create on the series' budget. See more
When McCoy arrives in 1930 NY, he believes he is in a fabricated environment and marvels at the detail of reconstruction. As he leans on a column less than 6 inches in diameter he remarks on the detail, "...even down to the cement columns." implying the free-standing column he is leaning on is made of cement. Clearly, the size and texture of the column would make it metal. A free-standing street column also would suggest a utility pole, none of which would be made of cement. See more
You deliberately stopped me, Jim. I could have saved her. Do you know what you just did?
He knows, Doctor. He knows.
The closing credits are set against a combination background of stills from that episode and previous episodes. See more
Theme From Star Trek
Written by Alexander Courage See more