Doctor Who

Season 0, Episode 145

Episode Title: Deep Breath Prequel

Air Date: 2014-08-23

Overview:

With fleeting appearances by Madame Vastra and Jenny, this prequel has Strax giving another overview of all the Doctors, this time updated to include the new Twelfth Doctor. Strax just had to address the exact number of Doctors thanks to The War Doctor and the Tenth Doctor staying exactly the same after his regeneration in Journey’s End.