Voyage of the Damned (Doctor Who) opinion about the episode was divided; the writing and Minogue's performance were both praised and criticised. The episode continues from the end of the third series finale "Last of the Time Lords", when the TARDIS collided with the "Titanic". To investigate further, the Doctor runs the TARDIS's self-repair programme and boards the "Titanic", where he discovers that the "ship" is an interstellar cruiser from the planet Sto. Modelled after the Earth ocean liner of the same name, the ship is orbiting present-day Earth to observe "primitive cultures"–specifically, Christmas. He decides to stow away, only telling waitress Astrid Peth (Kylie Minogue)
Astrid Peth be the next companion after Martha Jones (played by Freema Agyeman) on 14 August 2007. Astrid's surname, Peth, was confirmed in the Christmas edition of "Radio Times". Davies has stated that the character was always going to be a "one-off" even before Minogue was cast and that Astrid would demonstrate "a whole new take – again – on what a companion can be". The name Astrid Peth generated some speculation before the episode's broadcast over the findings that "Astrid" is an anagram of "TARDIS", and that "Peth" means "thing" in Welsh. However, the episode established no such connection. On "Doctor