What you have got to do is to destroy the thing that is upstairs. Destroy it so that not a vestige is left.

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

You can hear this line at 01:19:06.522 in the Blu-ray version of the movie.

Quote context

[...]

- Who he is, why he died, how he died, are matters that do not concern you. What you must do is...

- There's no need for you to go on, Dorian. Your horrible secrets don't interest me.

- They'll have to interest you.

- You are the one man who is able to save me.

- You're scientific, Allen. I have seen your name recently in scientific reviews in connection with certain curious experiments.

- What has that to do with you?

- What you have got to do is to destroy the thing that is upstairs. Destroy it so that not a vestige is left.

- Nobody saw this person come into the house. He is supposed to be in Paris. When he is missed, not a trace of him must be found here.

- You must change him and everything that belongs to him, including his coat and his travelling bag, which I have locked up in this room into a handful of ashes.

- You must be insane to suppose I'd lift a finger to help you.

- It was suicide, Allen.

- What drove him to it?

[...]