I knew you were a danger to me right from the off. Especially after Halloween.
6 seconds sound clip from the Harry Potter and the Sorcerer's Stone movie soundboard.
You can hear this line at 02:14:30 in the Blu-ray version of the movie.
Quote context
[...]
- But that day, during the Quidditch match, Snape tried to kill me.
- No, dear boy. I tried to kill you!
- And trust me, if Snape's cloak hadn't caught fire and broken my eye contact, l would have succeeded.
- Even with Snape muttering his little countercurse.
- Snape was trying to save me?
- I knew you were a danger to me right from the off. Especially after Halloween.
- Snape, unfortunately, wasn't fooled.
- While everyone else was running about dungeon, he went to the third floor to head me off.
- He, of course, never trusted me again. He rarely left me alone.
[...]