Duration: 57.5s

It's a sign, Severus. You know what it means as well as I. Potter! What's your hurry? Congratulations, your performance in the Black Lake was inspiring. Gillyweed, am I correct? Yes, sir. Ingenious. A rather rare herb, gillyweed. Not something found in your everyday garden. Nor is this. Know what it is? Bubble juice, sir? Veritaserum.