But why would the Mad Hatter drop this card in Madam Magda's shop?
8 seconds sound clip from Batman (1966) - The Thirteenth Hat (S1E13) TV Series.
You can hear this line at 00:16:37 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, I loved her hat. And that divine cowl... I wonder if it comes in any other color.
- I know Octave Marbot. I'm sitting for a statue he's making of me.
- Gosh, Batman, that's a great idea.
- But why would the Mad Hatter drop this card in Madam Magda's shop?
- He could be taunting us with a clue.
- Perhaps the edge lighted, loose sight map of Gotham City will tell us some more.
- Now, he's been striking all over the city.
- Madam Magda's millinery maison.
[...]