Talk:Great Catastrophe (The Exterminators)

http://www.denofgeek.com/tv/doctor-who-series-9/37821/doctor-who-series-9-geeky-spots-in-sleep-no-more

Gatiss confirmed the "Great Catastrophe" was an intentional reference to Frontios. 208.101.148.77talk to me 15:42, November 15, 2015 (UTC)