His cherubic countenance and assumed innocence made me forget the black heart of a murderer.
5 seconds sound clip from the Knock on Any Door movie soundboard.
You can hear this line at 01:07:17.039 in the Blu-ray version of the movie.
Quote context
[...]
- And now, Mr. Swanson, be very careful of your next answer.
- Did you get a good look at the holdup man?
- Yes.
- Do you see him here in this courtroom?
- Oh, you mean the young man, the pretty boy, sitting next to Mr. Morton?
- Mr. Morton objects, your honor. And if he desires, I will withdraw the appellation pretty boy.
- His cherubic countenance and assumed innocence made me forget the black heart of a murderer.
- Did the unidentified holdup man wear a hat or a cap, or was he bareheaded?
- I don't know, but that's him right over there.
- The man that held you up... what color was his hair?
- You got a good look at the man who held you up?
- Sure. He stood right across the bar from me.
- Yeah.
[...]