Continuity mistake: The blood smear on the photograph pointing out the head of HR changes position between shots.
Person of Interest (2011)
1 continuity mistake in The Perfect Mark
Starring: Jim Caviezel, Taraji P. Henson, Amy Acker, Michael Emerson, Kevin Chapman
Lady Killer - S3-E3
Continuity mistake: Root shoots the hitman, walks up to him and slides his gun a couple of feet away. A wide shot shows the gun where it should be. After she says "you're the boss" and starts walking away, we see exactly the same angle, the gun has vanished, and some random black bits have appeared.
[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