THGhost

Continuity mistake: When the crew are in the cockpit talking about Miranda, Jayne is in the background holding his head with his left hand. 5-6 shots later he is holding it with his right hand. On the cast commentary of the DVD, Adam Baldwin says that he did this on purpose "just to mess with continuity". (01:03:35)

THGhost

Continuity mistake: Seeing as how the original sets for the ship's interior from "Firefly" were demolished after the show got cancelled, the interior had to be re-built from scratch for Serenity. Because of this, there are some noticeable differences between the two. For example: The long corridor that holds the entrances to the crew's sleeping quarters is a lot wider. The hand rail on the stairs leading from the infirmary to the cargo bay is missing. The back wall of the cargo bay, the entire engine room (including Kaylee's hammock), some of the table settings in the kitchen and the furniture in the lounge area are all different to how they were in "Firefly".

THGhost

Continuity mistake: During River's first fight scene she climbs some stairs. She then does two forward flips down the stairs. As she lands, her hair is raised from doing the flips but in the immediate shot her hair is down again. (00:34:55)

THGhost

Continuity mistake: While Zoe determines the location of Miranda, there are two shots of Jayne with his arms down by his sides - one where he is standing behind Inara and one with Wash in the foreground. When it cuts back to the shot of him standing behind Inara, his left hand is on his belt. His hand then returns to its original place when it cuts back to Wash. (01:04:20)

THGhost

Continuity mistake: When the cast are at the Miranda colony and discover that everyone is dead, there is a rotating shot of River as she realises what happened. Prior to this there is a brief closeup shot of the rest of the cast as they turn to face her. Jayne turns to his right, but in the following rotating shot of River he has turned from his left. (01:16:30)

THGhost