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.
Continuity mistake: Harold, Shaw and Harold's friend escape from their captors early in the episode. They smash the front driver's side window of a parked car, which they hot wire to drive to the bank where the tapes are stored. When they arrive at the bank, the window is in perfect condition.
Continuity mistake: The blood smear on the photograph pointing out the head of HR changes position between shots.
Lady Killer - S3-E3
Factual error: They show a flight reservation for the young boy's trip to London from LaGuardia to Heathrow. LaGuardia is for domestic flights only.