He felt that he had struck a mortal blow, not only at his friend but at himself.
5 seconds sound clip from the The Picture of Dorian Gray movie soundboard.
You can hear this line at 01:14:47.390 in the Blu-ray version of the movie.
Quote context
[...]
- Gladys must never know. Yet sometime, somehow, Basil might reveal his secret to her.
- The one person in the world whose good opinion was indispensable to him.
- Panic seized him. He felt like a hunted animal, cornered, desperate.
- It was as if the painting had sweated a dew of blood.
- He felt that he had struck a mortal blow, not only at his friend but at himself.
- It seemed to him unbearable that what he had done could never be undone.
- Men were strangled in England for what he had done. And yet what evidence was there against him?
- Basil had left the house at 11. No one had seen him come in again.
- Most of the servants were at Selby. His valet had gone to bed.
[...]