Could there be secret writing on this document?
5 seconds sound clip from Batman (1966) - Hi Diddle Riddle (S1E1) TV Series.
You can hear this line at 00:13:55 in the Blu-ray version of the movie.
Quote context
[...]
- When you chewed over this one, look for two others.
- Two other riddles, of course.
- Exactly.
- And where can we look? What do we have with us which The Riddler gave us?
- Could there be secret writing on this document?
- When is the time of a clock like the whistle of a train?
- When it's two to two. Too-too-too!
- Right you are. Here comes another one.
- What has neither flesh, bone... nor nail, yet has four fingers and... a thumb?
[...]