Failure to Communicate - S2-E10
Continuity mistake: When the scene starts with Stacy and House in the airport about to start talking, she has a pen in her mouth. In the very next shot it's on her ear, and in the next it's gone. It switches back and forth throughout the rest of the scene.
Answer: You have the right episode. The big deal at the end about the letters on the pills was to show that Brandon had the wrong pills all along. House was smiling because he was right.
MoonFaery ★