Augen on 18 April 2015
I have to state I have not seen much of the older doctors. I was introduced by the 9th Doctor and gone back and watched handful of old episodes.
I am bad at episode name, but the 10th doctor was on a tour of a dead planet when something terrorizes the crew and gets into the mind of a passenger and nearly convinces them to kill the doctor.
It was a self contained episode and made great use of low budget with a great and terrifying sci-fi concept. Never has mimicking been so disconcerting.
