I know he plans a gigantic coup, but I am not in on his plans.

6 seconds sound clip from Batman (1966) - True or False Face (S1E17) TV Series.

You can hear this line at 00:20:02 in the Blu-ray version of the movie.

Quote context

[...]

- But I know that's only part of his overall plan. We must have details of complete plot. How? Where? When?

- I don't know.

- You? His first lieutenant. That's pretty dim, Blaze.

- False Face trusts no one and no one trusts False Face.

- Like his name, like his innumerable disguises. He's forever in concealment.

- I know he plans a gigantic coup, but I am not in on his plans.

- Then I'm afraid we're at a dead end.

- I'll tell you one thing, Batman: if there's one force in this world that False Face fears, it's you. And the Boy Wonder of course.

- Many times I've heard him mutter 'if it were not for the Caped Crusaders, I would be kingpin of the criminal class'.

- That swine. That False Face is rotten to his concealed corp.

[...]