Stardate: Not available, 1930 old earth.
Original airdate: 4/6/1967
Writer: Harlan Ellison
Director: Joseph Pevney

Guest stars:

Joan Collins            Edith Keeler, social worker who runs a mission during the depression, founder of a peace movement during WWII in an altered time event.
John Harmon             Milk drinking man
Bartell LaRue           Voice of the Guardian of Forever, a machine/being doorway to the past.

Crew Appearances
Kirk, Spock Mccoy,
Uhura, Scott, Sulu (gets zapped at the Helm),
No chekov.
Lt. Kyle, transporter.

Accidentally overdosing himself with Cordrazine, a wildly insane McCoy beems down to the planet below and jumps through the Guardian, changing history and the existance of everything. Kirk and Spock go chasing after him to set right what McCoy did to change history. Sadly, Kirk finds out that Edith Keeler must die to prevent her from forming a Peace Movement that prevents the US from entering WWII, so that Nazi Germany takes over the world.

Cordrazine: medication that treats heart flutter, but also dangerous in large doses.

Far Left Star in Orion's belt (Alnitak, zeta Orion) home of a popular novel in the 23rd C.

The Star Dispatch- newspaper

Clark Gable-mentioned

Quotes: so many, here are the top 7

"Murderers, Assassins, Killers!!!!" Mccoy.
__________________
"A question. Since before your sun burned hot in space and before your ... I have awaited...a question." Guardian.
_________________
"Let me help." Keeler.
__________________
"She has 2 possible futures then. And depending on whether she lives or dies, all of history will be changed, and McCoy......" Kirk.

"He's the random element." Spock.
__________________
"I'm a surgeon, not a psychiatrist." McCoy.
__________________
"What happened sir. You only left a moment ago."Scotty.
__________________
Let's get the hell out of here." Kirk.