El momento de la despedida
This special was the first full episode starring David Tennant as the Tenth Doctor; he was only shown briefly at the end of "The Parting of the Ways" for the regeneration sequence. A , set between "The Parting of the Ways" and "The Christmas Invasion", was shown as part of the Children in Need charity telethon on 18 November 2005. The Christmas special is a tradition in British television series. While this is the first story for "Doctor Who" clearly labelled as a Christmas special, the seventh episode of "The Daleks' Master Plan", titled "The Feast of Steven", was written as a Christmas episode, even featuring a fourth wall-breaking Christmas wish to the viewers by William Hartnell. Christmas specials became an annual staple for Doctor Who, until 2018, where it was replaced by a New Years special. Although not shown at Christmas, "The Unquiet Dead" was set on Christmas Eve, 1869.