The conclusion to this story is marvelous almost from the get go. It has been superbly structured from Bannerman Road to the Krulius spaceship where Sarah faces off the Krulius alone.
My Sci-Fi/Fantasy Security Council - Whoniverse, Blake's 7, Star Trek, Lost In Space, Babylon 5verse, Stargate, Buffyverse
My Doctor Who season count: 1-26 original series, 27-30 Paul McGann Big Finish (pre-2005), 31- current series.