History of Doctor Who the UK in the spring of 2007 and began airing in Canada and the US during the summer of that year. A 2007 Christmas Special "Voyage of the Damned" was broadcast on 25 December 2007 in the UK, featuring Kylie Minogue as a waitress named Astrid. The fourth series aired in the UK in 2008 featuring two companions; Donna Noble, who first appeared in "The Runaway Bride" and Martha Jones, who returned to the series for five episodes of series four. Billie Piper also returned to the show to reprise her original role as Rose Tyler. Following broadcast of the
Astrid Peth Mr Copper (Clive Swift), teleporting with some "Titanic" passengers down to Earth where she and the Doctor meet Wilfred Mott (Bernard Cribbins). Upon their return to the ship, she and the Doctor discover the plan of Max Capricorn (George Costigan) to destroy the "Titanic", its passengers and the nearby people of Earth with his villainous angelic robots, the Host. As they attempt to save the ship, Astrid grows increasingly fond of the Doctor, kissing him as part of what she assures is an "old tradition" on Sto. In the episode's climax, Astrid sacrifices herself to save the Doctor from Capricorn