Oh, my, it's become quite dark in here.
5 seconds sound clip from The New Adventures of Winnie the Pooh - The New Eeyore / Tigger, Private Ear (S1E21).
You can hear this line at 00:11:53.804 in the Blu-ray version of the TV Series.
Quote context
[...]
- The lightning flashed. The wind roared. It was a dark and blustery night.
- Three worried souls gathered at the stately, yet creaky, mansion.
- I suppose you're wondering why I called you all here tonight, said the private eye.
- It's because I've discovered who stole the Glockenspiel diamond.
- He's someone in this very room! And that someone is...
- Oh, my, it's become quite dark in here.
- Well? Well? Who swiped the diamond?
- Oh, I don't know where you're glasses are, but how about using these instead?
- My glasses! You found them. I did?
- Why, Tigger, you'd make a much better private eye than the hero of this book.
[...]