Audio problem: When Julie walks into Nathan Bates' office and says 'I've got a question for you' her lips do not match what is heard. (00:33:55)
Continuity mistake: When Elizabeth is pricked by the rose, there is a closeup of her bleeding finger. Before and after this shot Kyle is holding her hand, but not in the closeup. (00:03:25)
Revealing mistake: The two Elizabeths are both played by the same actress, except in the shots where both are seen together. Continuity mistakes in the second Elizabeth's death scene reveal this, such as the second Elizabeth's head position changing, and the first Elizabeth's jacket being open/closed between shots. (00:42:30)
Audio problem: At the start of Nathan Bates' angry rant, he says 'What do you mean, another van of children got through the border?' and it has obviously been dubbed as it sounds different from his following lines. My guess is that he swore originally, and it was taken out by the producers at the last minute. (00:06:05)
Audio problem: When Mike and Ham arrive at the church, their lines have been badly dubbed as Mike is still supposedly talking to Ham as he gets out and shuts the van door. (00:06:50)
Deliberate mistake: The shot of the cocoon gestating is taken from episode 2. This is evident because there is sand underneath it and rocks in the background, but when the tracker finds it later, there are no rocks and sand in the tunnel. (00:25:30)
