Doctor Who (1963) - 36 mistakes in series 1

Visible crew/equipment: About 90 seconds into Episode Two, the shadow of the boom mic crosses Ian's face.

Factual error: The story is set in 1289, when Marco Polo was anxious to leave China against Kublai Khan's wishes, so what's Polo doing on the Pamir Plateau?

Continuity: When Ian and Barbara enter the TARDIS for the first time, Susan operates the door switch. Later on, when the Doctor electrocutes Ian, he uses the exact same switch.

Revealing: You can see the studio floor in the "white void" outside the TARDIS door in early shots during episode one of this story.

Visible crew/equipment: The boom mic shadow makes an apperance in Episode Two, moving across the console as the Doctor suggests abandoning Barbara.

Factual error: "Peking" is mentioned several times in this story, but this is an anachronism - this story is set in the year 1289 when Peking (now called Beijing) was known as "Khan-balik".

Revealing: Susan is supposed to be running through a forest. It is painfully obvious that, in fact, she is simply running on the spot against a back-projected film, and the branches that hit her are simply studio stagehands, hiding just out of shot, hitting the actress with twigs.

Other: William has a bit of a nightmare, completely throwing the others during one scene by saying the same line ("It's not very likely") twice, and fumbling the line "You knocked both Susan and I unconscious". He also omits the scripted explanation for the melted clocks.

Continuity: The caption slide at the end of episode two reads: 'Next Episode: The Cave of Five Hundred Eyes'. While the title slide comes up at the start of episode 3, it simply says "Five Hundred Eyes".

Other: In episode seven, Kublai Khan refers to backgammon as a game of cards....obviously he's not an experienced backgammon player.

Revealing: In episode one, the Voord that falls down the pyramid shaft is very obviously a cardboard cutout.

Visible crew/equipment: In episode one, when the Doctor is near the pyramid, someone's leg can be seen just before the shot ends.

Continuity: In episode three, Temossus claims the Thals have been travelling for four years. But in episode five, Ganatus claims it is one year.

Revealing: In episode one, when Ian notices the breeze, a wide shot of the forest shows the background dropcloth is moving.

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.

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.

Plot hole: Yartek tried to disguise himself as Arbitan, by wearing Aribtan's robes, and pulling the hood over his giant rubber head. Strangely enough, no-one seems to notice that "Arbitan" is now suddenly speaking with completely different voice, and now has a two-foot-tall-head.

Continuity: In episode one, Barbara activates her travel dial only seconds before the others. But in episode two, she's been at Morphoton for quite some time - long enough to change clothes, pick fabrics and get food.

Revealing: During the long continuous hand held shot of Ian and Barbara exploring the junk yard in episode one, the cameraman trips, making the image jump up and down.