Revealing: Just after Avon slips into the access tunnel and the prisoners close the hatch behind him, the star field in the window shakes and wobbles.

Continuity: Though no one touches him, the London crewman lying dead in the transfer tube changes positions between the time Blake and co. first board Liberator, and the time Raiker enters the tube and shoots at Blake.

Revealing: Aboard the London, as Raiker opens the rec-room door, a boom mike shadow moves across Avon's face.

Visible crew/equipment: That main console! The uppermost of the flight consoles of Liberator isn't fixed down in this episode, and wobbles almost every time it is touched, and not just small wobbles. Watch for the 10 seconds or so after Jenna says "Eventually I might just be able to get her to start and stop", and you'll wonder how she didn't knock the entire prop off whatever it's sitting on and onto the floor.

Revealing: The boom shadow is visible moving swiftly across the actors' heads when Avon says, "You've got an army of five, Blake."

Continuity: At the end of "The Way Back," Blake, strapped in his prison ship seat, looks over his shoulder at the window behind him as the ship leaves Earth. This same scene is recapped at the beginning of "Spacefall," only now Blake is sitting one seat to the left of the window instead of directly in front of it.

Revealing: Whenever the prison ship fires its engines, the smoke trails travel to the top of the screen, as smoke does in an atmosphere. In space however, it should billow away from the engines in a more or less straight line.

Continuity: A large white cushion, knocked askew when Blake tosses Avon over the flight couch, has righted itself a few shots later, as Avon gets up from the deck.