In perhaps Britain’s greatest hour of need, the eleventh Doctor, as played by Matt Smith, answers the call of Winston Churchill (guest star Ian McNeice) and arrives in London during World War II. With Amy Pond (Karen Gillan) at his side, the Doctor wants to learn more about Britain’s latest weapon that has started to turn the tide in the war. However, he is horrified to learn that the source of the country’s good fortune is non-other than a Dalek! Is this another ploy for global extermination or has the Doctor’s greatest enemy truly had a change of heart?

First Broadcast: BBC One, 17^th April 2010

Written by: Mark Gatiss

Directed by: Andrew Gunn