- The motive is very simple, monsieur. He wanted to get me out of the way so he could make room for that little... 
- Are you referring to Mademoiselle DuBois? 
- I am.
8 seconds sound clip from the Phantom of the Opera (1943) movie soundboard.
You can hear this line at 00:53:26.897 in the Blu-ray version of the movie.
Quote context
[...]
- Well, haven't you evidence enough? Everyone knows...
- Madame! Will you be seated, please?
- Certainly, Monsieur Inspector. We all did.
- It becomes, then, a question of motive.
- Are you referring to Mademoiselle DuBois?
- I am.
- Madame is in good voice, and most explicit.
- Have you anything to say, monsieur?
- Do you deny, monsieur, that you had any motive in drugging madame?
[...]

 Phantom of the Opera (1943)
 Phantom of the Opera (1943)  Scooby-Doo, Where Are You! (1969)
 Scooby-Doo, Where Are You! (1969)  Halloween III: Season of the Witch (1982)
 Halloween III: Season of the Witch (1982)  Knight Rider (1982)
 Knight Rider (1982)  Garfield's Halloween Adventure (1985)
 Garfield's Halloween Adventure (1985)