To heighten the tension of Spencer Tracy's final summation to the jury, the scene was filmed in a single take.
Stanley Kramer was advised against casting Fredric March and Spencer Tracy in the lead roles as it was felt young audiences would not want to see veteran stars.
Fredric March and Florence Eldridge, the actors who play Matthew and Sarah Brady, were married in real life from 1927 until his death in 1975.
Was the first in-flight movie ever shown on Trans World Airlines.
The Hillsboro County Courthouse is the same building as the Hill Valley Courthouse in Retour vers le futur (1985) and the Maycomb Courthouse in Du silence et des ombres... (1962). It was originally built for Le droit de tuer (1948), in which Fredric March and Florence Eldridge also starred as a married couple.