Continuity mistake: The blood smear on the photograph pointing out the head of HR changes position between shots.
Person of Interest (2011)
1 mistake in The Perfect Mark
Starring: Jim Caviezel, Taraji P. Henson, Amy Acker, Michael Emerson, Kevin Chapman
[Elias has been captured but triggered a trap, killing some of Dominic's men.]
Dominic: You think that changes anything? I still won.
Elias: Then why aren't you smiling?
More trivia for Person of Interest