Revealing: As Avon and the crew run through the station and the guard tosses a grenade at them, you can see the white packet of incendiary charges on the floor that will set off the grenade's explosion.

Deliberate "mistake": In the escape scene near the end, an explosive charge that went off too soon knocked Paul Darrow over - and briefly out of the shot. Because he was able to get back up and keep running, the accident was left in, though he's said it was fortunate there was no microphone on him at the time, as he uttered a few words that were "definitely not rated PG."

Visible crew/equipment: When Vila is talking to Cally on the flight deck, the boom shadow moves across the Liberator's control console.

Other: On the flight deck, when Vila says he can't remember anything "between meeting Largo and waking up back on the ship," Bek, sitting behind him, starts his next line too early, stops and waits for Vila to finish, then says it again.

Visible crew/equipment: The boom shadow forms a distinct outline on the control console next to Vila when the crew are discussing Space City and the Terra Nostra.

Revealing: When Bek pulls the silver shroud off of Petey, note the movement on the chest of the corpse, which is obviously breathing.

Plot hole: How very perspicacious of the clone masters to create their duplicate Blakes wearing the exact same outfit that the real Blake happens to have on in this episode, considering they have never seen Blake in person.

Visible crew/equipment: When the clone Blake is asking Coser for the weapon and holding his hand out, the boom mike is visible hanging over his head.

Plot hole: The IMIPAK weapon marks its victims and then kills them with a secondary device. But it's inconsistently selective. When Servalan kills the guard with it, Blake and co., marked and standing nearby, are unharmed. But Rashel later warns Travis not to push the button because he and Servalan are marked and would die too.

Continuity: Jenna's bracelet changes from her right to her left wrist in mid-teleport when she and Blake go down to the planet.

Continuity: When the crew teleports up at the end, the shirtless Vila arrives in a completely different position relative to the others. On the surface, he's standing in a ring with the rest of them. When they materialize, he's hunched over and is now in the middle of their circle with the others around him.

Revealing: In the control complex, Avon tosses two coin-like objects onto the electrified floor to test the grid. But the "coin" is already on the floor before the sound effect of it landing can be heard, and the mini explosions the coins set off is the same footage both times.

Plot hole: Whomever designed the base's defenses was an idiot. The electrified matting outside extends for a distance exactly equal to the distance a man can run in the 8 seconds it takes to self-repair; any sensible defense designer would have extended it to a greater distance than it was possible for anyone shooting it to run in that time. Inside the base, we see the ceilings of many passageways (well, actually the same section of passage over and over with different lighting), and the only passage with overhead pipes/monkey bars is the one with the electrified floor. Very convenient.

Visible crew/equipment: In one shot of the Liberator's flight deck near the very end, there's a BBC workman's toolbox visible, sitting under one of the control consoles.

Factual error: Servalan's space station is shown rotating at a fairly fast clip. But the stars in both her office window and in the courtroom window are stationary. Because the station is spinning much faster than a planet's normal rotation, the stars should be visibly moving.

Factual error: Avon and Vila watch the rocket launch from the surface of the planet. The rest of Liberator's crew also watch it from the flight deck, and somehow their view from orbit is at exactly the same angle from which Avon and Vila are seeing it: a ground-to-air shot.

Revealing: Due to recycled stock footage from "Space Fall," the Liberator leaving Fosforon at the end of this episode still has the prison ship London attached to its hull.

Revealing: Avon drills holes in the Plex/Perspex tubing housing the bomb's trigger mechanisms. If you look closely, you can see that the holes are already there before he starts drilling.

Factual error: Avon and Grant use an electric torch to melt the ice covering the bomb. When it's removed from its hiding place, it is suddenly completely dry and clean: not a trace of ice, water or dirt on it anywhere.

Continuity: Provine shoots the rebel guarding the rocket in the chest. But later, when his body is found, the man is bleeding from the mouth instead, and the blood pooled on the floor beside him changes from beside his head to above his head between shots.