The TARDIS suddenly stops and The Doctor, Susan, Ian and Barbara must face their fears and figure out what’s happened.
So, the TARDIS is crashing for some reason. That describes about four fifths of this episode. Anyway, the travellers are all knocked unconscious, gradually wake up one by one, for some reason don’t remember anything about where or who they are.
And then, for some reason, they do.
Paranoia and conspiracy theories ensue, whereupon The Doctor attempts to kill, roofie and kill (again) his companions. For some reason. This goes on for about 90% of the twin-episode story-arc until we’re left with the most disappointing deus ex machina that has ever been pulled out of a hat on any show ever. We were both baffled and disappointed.
If you haven’t seen this episode yet, please don’t. Do listen to our review of it, though, to hear two people ripping on something that they essentially love.
(Our Ratings and Reviews of this Doctor Who story kick in at the 38-minute mark.)