The Brink of Disaster (Inside the Spaceship Episode 2)

The one where a faulty spring almost wipes out Doctor Who before it's barely begun...

It's Ian! The mysterious hands reaching for the Doctor's neck at the end of the last episode were those of a disorientated (and drugged) Ian Chesterton, who is apparently trying to warn the Doctor not to go near the console because it's electrified. However, I don't blame the Doctor for thinking the worst of Ian, because when I'm warning people about such catastrophes, I don't go around wrapping my hands around their necks.

Ian collapses to the floor dressed in only a dressing gown (and if you've ever had any inclination to see Ian's undergarments, here's your chance), but despite Barbara's defence that he's fainted, the Doctor insists: "He's only play acting!" You're not wrong there, Doctor - William Russell continues to play this like he's been smoking marijuana all week.

The Edge of Destruction (Inside the Spaceship Episode 1)

The one where the TARDIS crew turns against each other...

The Edge of Destruction is weird right from the outset. As soon as we hear that strange, electronic music, we know things aren't as they should be. It's stock music by Eric Siday, but sounds for all the world like Dr Phibes on his organ! In fact, some of the stock music used in this episode will become much more prolific and familiar during the Troughton era, particularly when it's used in Cybermen stories.

And it's not just the music that's different here. The way the four regular characters act and interact is totally off-kilter too. David Whitaker wrote a surreal two-parter in which something is affecting the TARDIS and its occupants to the extent that they suffer amnesia, paranoia and severe headaches. It's essentially a mini psychological thriller featuring just the regular cast, but the way each actor approaches this experimental piece differs considerably.