Dr. McCoy Becomes Paranoid (The City on the Edge of Forever)

[Bridge] 
 
(Enterprise is at Red Alert as she orbits a muddy looking planet. Every so often the ship shakes.) 
 
KIRK: Stay on top of it, Mister Sulu. 
 
SULU: We're holding orbit, sir. The helm is sluggish. 
 
SCOTT: Control circuits threatening to overload, Captain. 
 
KIRK: Understood, Engineer. Mister Spock? We can't avoid these areas of turbulence. 
 
SPOCK: I believe we'll have them plotted in a few more orbits, Captain. 
 
(Sulu's console explodes and he is thrown to the floor, unconscious.) 
 
KIRK: Sickbay. To the Bridge. 
 
SCOTT: Switching to manual, Captain. Do we maintain this orbit? 
 
KIRK: Spock? 
 
SPOCK: This is of great scientific importance, Captain. We're actually passing through ripples in time. 
 
KIRK: Maintain orbit. Open the channel to Starfleet Command. Precautionary measure, Lieutenant. Broadcast to Starfleet Command my past week's log entries, starting with the unusual readings we had on the instruments and how they led us here. Inform Starfleet Command that apparently something or someone down on this planet 
 
(McCoy enters) 
 
KIRK: (pointing to Sulu) Bones. Can effect changes in time, causing turbulent waves of space displacement. 
 
MCCOY: Some heart flutter. Better risk a few drops of cordrazine. 
 
KIRK: Tricky stuff. Are you sure you want to risk 
 
(The hypo is administered and Sulu opens his eyes.) 
 
MCCOY: You were about to make a medical comment, Jim? 
 
KIRK: Who, me, Doctor? 
 
SCOTT: (at the helm) We're guiding around most of the time ripples now. 
 
KIRK: Mister Spock? 
 
SPOCK: All plotted but one, Captain. Coming up on it now. Seems to be fairly heavy displacement. 
 
(And they hit it just as McCoy still has the hypo in his hand, and the jolt results in him injecting it into his own stomach.) 
 
KIRK: Bones! Get back to your positions. 
 
SPOCK: The hypo, Captain. 
 
KIRK: It was set for cordrazine. 
 
SPOCK: Empty. 
KIRK: Communications, emergency medical team. 
 
MCCOY: (screams) Killers! Assassins! I won't let you! I'll kill you first! I won't let you! You won't get me! Murderers! Killers! 
 
(He dashes into the turbolift.) 
 
KIRK: Security alert.