Death (The Immunity Syndrome)

Captain's log, stardate 4307.1. Approaching Starbase Six for a much needed period of rest and recreation.
 
[Bridge] 
KIRK: The crew has performed excellently, but is exhausted. And I, too, am looking forward to a nice period of rest on some lovely planet. 
 
UHURA: Captain. There was a message from Starbase Six. Heavy interference. All I get is Intrepid and what sounded like a sector co-ordinate. 
 
SPOCK: Interesting. No indications of magnetic storms in this sector. 
 
KIRK: Try another channel, Lieutenant. 
 
UHURA: Aye, sir. 
 
MCCOY: The Intrepid is manned by Vulcans, isn't it? 
 
KIRK: Yes, that's right, Bones. 
 
UHURA: Enterprise calling Starbase Six. Enterprise calling Starbase Six. Come in. Come in. 
 
(Spock suddenly jerks upright, his face a picture of horror.) 
 
KIRK: Spock? 
 
MCCOY: What is it, Spock? Are you in pain? 
 
SPOCK: Captain, the Intrepid. It just died. And the four hundred Vulcans aboard, all dead. 
 
MCCOY: Come on, Spock, let's go down to Sickbay. 
 
SPOCK: Doctor, I know what I know. 
 
KIRK: Get to the Sickbay. 
 
SPOCK: Captain. 
 
KIRK: No, no, no. That's an order. 
 
SPOCK: Yes, sir. 
 
(McCoy leads him away.) 
 
UHURA: Captain, I have Starbase Six readable now. Switching to audio, sir. 
 
KIRK: Kirk here. Go ahead. 
 
STARBASE [OC]: You will divert immediately to sector three nine J. 
 
KIRK: Sir, the Enterprise just completed an exhausting mission. We're on our way in for R and R. There must be another starship in that sector. 
 
STARBASE [OC]: Negative. This is a rescue priority. We've lost all contact with solar system Gamma Seven-A, which the Intrepid was investigating. And we've just lost contact with the Intrepid. Report progress. 
 
KIRK: Order acknowledged. Kirk out. Mister Kyle, you heard the order. Set course for Gamma Seven-A, warp five. 
 
KYLE: Aye, sir. 
 
CHEKOV: Captain I have just completed a full long-range scan of Gamma Seven-A system. It is dead. 
 
KIRK: Dead? It's a fourth magnitude sun. There are billions of inhabitants there. 
 
CHEKOV: It is dead.