Never fear. He wouldn't dare follow us and be exposed for all the world to see.

7 seconds sound clip from Batman (1966) - The Thirteenth Hat (S1E13) TV Series.

You can hear this line at 00:21:02 in the Blu-ray version of the movie.

Quote context

[...]

- Come on, Robin.

- It's working better than I dreamed. Batman's in the dressing room with Boy Wonder.

- My expert mimicry of perfect French fooled them completely.

- The moment... The moment has finally arrived. Batman's cowl at last.

- I don't like it, boss. Cowl or no cowl. Batman is still Batman.

- Never fear. He wouldn't dare follow us and be exposed for all the world to see.

- We'll take his cowl and be on our way. Conceal yourselves.

- I smell a rat.

- You smell the Mad Hatter in Marbot's disguise.

- He gave himself away with that remark about my statue's head. That was the first part he finished. And he was very pleased with it.

[...]