Revealing: In episode six, Ian helps Barbara get a grip on the rock and piece of the polystyrene pops off in his hand.
Revealing: In the Dalek city, it is unfortunately obvious that the "tunnels" behind the actors are just photographic blow-ups, as you can see the bottom of the wall meeting with the floor.
Continuity: The Dalek the crew ambush in episode three has a magnetic block in its sucker and, after the attack, a mud-covered eyestalk. At the beginning of episode four, the eye-stalk is visibly clear of mud, yet is later seen plastered with mud once more.
Revealing: Toward the end Episode Two, when Susan opens the TARDIS doors, the console wobbles.
Revealing: The supposedly heavy statue Ian drops down the lift to destroy the pursuing Dalek in episode four wobbles when he first touches it.
Continuity: In episode three, Temossus claims the Thals have been travelling for four years. But in episode five, Ganatus claims it is one year.
Visible crew/equipment: Toward the end of episode one, when Ian is wondering where Barbara is, the shadow of a boom mic moves over the door behind him.
Revealing: There are numerous scenes where the background Daleks are blown-up photographs. The most obvious is in episode five when the Daleks are discussing the radiation drugs.
Revealing: When the Thals are using sunlight to blind the Dalek cameras in Episode Six, wide shots of the Dalek city show it moving back and forth from bad matte combination.
Revealing: The Dalek that Ian hides from in Episode Seven has a bad castor. The flopping of one of its wheels is audible.