Following a special preview of Let’s Kill Hitler, an episode from the sixth series of Doctor Who, writer Steve Moffat joins actors Karen Gillan and Arthur Darvill for a BFI Southbank Q&A.
The actors remember their surprise on discovering the shocking plot twists in the script, while Moffat recalls his young son’s alarmed reaction at the episode’s blunt title - the writer reassured his child that “Hitler won’t be offended”.