Continuity: The scene where Doon is watching the boat follow its track, the boat automatically launches into the water. Yet when the three get into the boat, the boat does not launch until Doon pulls a lever.
Continuity: When Lina Mayfleet receives her red messenger poncho she puts it on quickly and begins lacing up the one side. She never finishes and does a cruddy job. When she runs out the door thereafter, she is interrupted when she reaches the door to verify she knows protocol. Her poncho is perfectly laced at this point.
Continuity: As Doon is walking to look at the Generator room, a girl in full orange work gear and yellow boots walks across the control room and towards a hall. The shot changes to the door. Then when it goes back to Doon, the same girl(orange gear, yellow boots) gets up from the left and starts walking across the room again, before the shot changes back to the door.
Continuity: After Doon and Lizzie jump through the hole and run away to escape from the giant mole, Lizzie suddenly is wearing a miners helmet. In the succeeding scene the helmet is gone again.