18 December

Events

 * 1926 - Agatha Christie was found at a hotel in Harrogate. (DW: The Unicorn and the Wasp)
 * 1953 - The Sky Gypsy, a small private plane bound from Cardiff to Dublin, disappeared. It reappeared in 2007. (TW: Out of Time)

Behind the scenes

 * 1937 - Derrick Slater (a Security Guard in DW: The Seeds of Death) was born.
 * 1965 - "Coronas of the Sun," episode 6 of DW: The Daleks' Master Plan, was first broadcast.
 * 1968 - Nina Wadia, who played Ramsden in DW: The Eleventh Hour, was born.
 * 1981 - Joshua Dallas (the Mark Chambers Node in DW: Silence in the Library) was born.
 * 2010 - K9TV: Regeneration was first broadcast on Five in the UK.