Summary
Highlights
The jury receives instructions from the judge regarding their duty in a first-degree murder case, emphasizing the mandatory death sentence if a guilty verdict is reached. The first vote is taken, resulting in 11 guilty votes and 1 not guilty, setting up the core conflict of the film.
A juror raises skepticism about the uniqueness of the murder weapon, a knife, suggesting it might not be as rare as initially presented, which opens up the possibility of coincidence in the evidence.
A second, secret ballot vote is taken, resulting in one more 'not guilty' vote. The discussion then moves to inconsistencies in witness testimonies, specifically the old man hearing the boy's statement and the woman seeing the killing through a passing train, highlighting how the train's noise would have made the old man's testimony impossible.
A juror physically demonstrates how long it would take an old man with a limp to reach his door, contradicting the old man's testimony about seeing the boy leave 'a split second later'.
A roll call vote is conducted, revealing an even 6-6 split. The deliberation then shifts to the nature of the stab wound, specifically how difficult it would be for the shorter boy to stab his taller father downwards into the chest.
Another vote is taken by a show of hands, resulting in 9 'not guilty' votes to 3 'guilty'. The focus then turns to the woman eyewitness and the indentations on her nose from eyeglasses, suggesting that she likely wore glasses and might not have been wearing them in bed, thereby questioning her ability to clearly see the murder from across the street.
The initial holdout juror, convinced by the re-examination of the evidence regarding the woman's eyesight, finally changes his vote to 'not guilty', making the verdict unanimous and leading to the acquittal of the accused.