This week: Menagerie: part 1
There isn't a more loyal conscientious officer in the Star fleet than Mr. Spock, yet the message he gives to Captain Kirk ordering him to Starbase 11 proves to be false. More startling still, when the USS Enterprise abandons her incredulous captain and sets illegal course for the forbidden Talos IV, there is another captain aboard and the 'loyal' Spock is in command!
[Repeat]