- I'm Sibyl Vane's brother. Does that mean anything to you?
- No, nothing.

4 seconds sound clip from the The Picture of Dorian Gray movie soundboard.

You can hear this line at 01:32:41.910 in the Blu-ray version of the movie.

Quote context

[...]

- And Sir Tristan rode forth into the forest, seeking his only love.

- He has gone to kill your friend.

- Justice has come to England... without wig or gown.

- Come on, Kate.

- If it's money you want...

- I'm Sibyl Vane's brother. Does that mean anything to you?

- No, nothing.

- Why are you called Sir Tristan?

- It happens to be my name.

- You're lying. Eighteen years I've been looking for you.

- How old do you think I am?

- Why didn't you murder him? They could only have hanged you for it.

[...]