Continuity mistake: When Kaylee and Simon go looking for spare parts on board the derelict ship, there are two green lights lit up on a control box behind Kaylee. But once Kaylee pulls one of the ship's parts out, the two green lights are no longer lit. Several lights in the room flicker and flash on/off, but the two green lights on the control box behind Kaylee do not.
Continuity mistake: At the beginning of the episode, when Inara asks Simon how River is, River's hair is hanging down behind her back on both sides. But when Simon tells Inara that she still won't talk about what was done to her at the Academy, her hair is hanging in front of her right shoulder. A few shots later her hair is hanging behind her back again.