Enterprise Attacked (The Changeling)

[Bridge] 
KIRK: Any response from the Malurians, Lieutenant? 
UHURA: Nothing since their original distress call, sir. 
KIRK: What about the Federation science team working there? Doctor Manway had a special transmitter. 
UHURA: There's nothing, sir. I'm scanning all frequencies. 
KIRK: They have to answer. 
SPOCK: Captain. They will not answer. The long-range sensor sweep of this system reveals no sign of life. 
KIRK: That can't be. The last census reported a total inhabitation of more than four billion people. 
SPOCK: I register no life readings at all, sir. 
KIRK: That's impossible. What could have happened? 
SPOCK: We would have known in advance of any system-wide catastrophe, and in the event of an interplanetary war, there would be considerable radioactive residue. Our instruments show only normal background radiation. 
KIRK: Any other possibilities? 
SPOCK: Unknown, sir. Sensor readings would have revealed the presence of any disease organisms. They do not. In addition, we received the routine report from this system only a week ago. Even the Symbalene blood burn does not act that swiftly. 
SULU: Captain, shields just snapped on. Something heading in at multiwarp speeds. 
KIRK: Evasive maneuvers, Mister Sulu. 
SPOCK: An extremely powerful bolt of energy, Captain. 
KIRK: Full power to the shields, Mister Scott. 
SCOTT: Giving them all we got. 
KIRK: All hands, Red Alert. Phaser banks stand by. Photon torpedoes to Condition Red, Condition Red. 
(The viewscreen fills with a ball of bright light.) 
SULU: It's going to hit. 
(Everyone gets thrown around a lot, and the lights go out for a short while.)