- Your cowl's the 13th, that leaves....
- One to go.... the 12th.

7 seconds sound clip from Batman (1966) - Batman Stands Pat (S1E14) TV Series.

You can hear this line at 00:06:21 in the Blu-ray version of the movie.

Quote context

[...]

- Commissioner, have you any more reports of hat thefts or vanishing people?

- As a matter of fact, yes. Word is slowly reaching us that six other fine citizens have disappeared in the last few days. Along with their headwear.

- I'll get back to you.

- The police department's on it's toes.

- Six more kidnappings.

- Six, plus the five we know about make eleven.

- Your cowl's the 13th, that leaves....

- One to go.... the 12th.

- 12 hats, 12 people.

- But why? What comes in twelve's?

- Donuts! Um, horse power. Um, amendments. Mile limits? Noon-midnight!

- Oh, that's not quite it. Twelve.

- A dozen?

- Shall we activate the bat computer?

- That sounds like a good idea. Feed it a question about dozens.

[...]