Continuity mistake: While Reese and the witness are hiding in an apartment, the door is opened by the student to dismiss the bad guys with the chain lock on the door. The door is open about 18 inches and yet when the student closes the door the chain lock is normally sized about 4 inches and is still attached.
Person of Interest (2011)
1 mistake in Witness
Starring: Jim Caviezel, Taraji P. Henson, Amy Acker, Michael Emerson, Kevin Chapman
Harold Finch: I'm a very private person.
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