Journey to Babel
The Enterprise transports delegates from many Federation governments to a conference on Babel. Sarek, the Vulcan ambassador, and his wife Amanda, a human, Spock's parents, are among the passengers. Spock has not seen them in four years. Spock's decision to join Starfleet rather that attend the Vulcan Science Academy created a rift between Sarek and Spock.
Kirk hosts a couple of receptions for the delegates. Sarek is accosted twice by the Gav, the Tellarite ambassador, who demands to know how he plans to vote at the conference on the issue of admission of Coridan to the Federation. Gav later turns up dead, due to a broken neck. Circumstantial evidence makes Sarek a likely suspect. Kirk confronts Sarek demanding to know where he was at the time of the murder. Sarek collapses due to a heart condition.






