Now, to understand it the way I understood it, hearing it from the mother, that is, from the mother half of Norman's mind...
10 seconds sound clip from the Psycho (1960) movie soundboard.
You can hear this line at 01:43:39 in the Blu-ray version of the movie.
Quote context
[...]
- The private investigator, too.
- If you drag that swamp somewhere in the vicinity of the motel, you'll...
- Have you any unsolved missing persons cases on your books?
- You have to go back 10 years to the time when Norman murdered his mother and her lover.
- Now, he was already dangerously disturbed, had been ever since his father died.
- Then she met a man, and it seemed to Norman that she threw him over for this man.
- Now, that pushed him over the line and he killed them both.
[...]