Character mistake: Doc holds the binoculars the wrong way round. (00:30:20)
The Battle of Central Park - S3-E6
Character mistake: When Justine Feraldo looks at the checkpoint feeds, she says that the Strigoi have overrun the checkpoint at 116th Street and 110th and Amsterdam. But the feed says 118th and Amsterdam.
Character mistake: When Charlotte is going into Henry's dream for the first time, while she is talking, in the background, you see Henry move his head and open his eyes.
Character mistake: Bellamy calls Monty "Murphy" when they get back to the Arc and he is losing oxygen.