I am considered an authority on the subject of prehistoric monsters.

6 seconds sound clip from the Bride of the Monster (1955) movie soundboard.

You can hear this line at 00:21:20.368 in the Blu-ray version of the movie.

Quote context

[...]

- Professor Vladimir Strowski, lieutenant Craig.

- Glad to meet you, professor.

- How do you do?

- Professor, will you bring him up to date?

- Lieutenant Craig, have you ever heard of Loch Ness?

- I think so. That's a lake in Scotland, isn't it?

- Mm. Then perhaps you are familiar with the Loch Ness monster.

- Vaguely.

- A few years ago, I was called in by the British police to investigate the appearance of a monster at Loch Ness. Well, they thought that it was some creature left over from a bygone age.

- I am considered an authority on the subject of prehistoric monsters.

- However, I must admit that my investigation failed to get the desired results, in that I did not see the monster myself. But others did. There are sworn statements.

- Professor, is it your theory that perhaps the Loch Ness monster crossed the ocean and came to the swamp?

- I consider that possibility extremely remote.

- But the cases do bear a certain similarity, in that there are so many varied descriptions of this so-called monster.

[...]