Audio problem: When Jill reveals herself as the second killer, we hear Sidney say "Jill". But her mouth doesn't move.
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Suggested correction: You can say "Jill" without moving your mouth.
Audio problem: When the rover is put upright you hear it. Sound does not travel in vacuum. (00:37:20)
Audio problem: Talia tells Fred that everyone saw his live video feed, and they now know to stay away from Mr. Devlin. After Talia leaves, Fred and Bertha speak briefly, and we can hear that Bertha's voice is slightly pitched up. Fred's voice had to be pitched up for it to sound the way it does, and the same thing happened to Bertha's voice in the process. (01:03:25)