Dodo's life prior to joining the Doctor and the circumstances under which she joined him in the TARDIS were elaborated on in the Past Doctor Adventures novel "Salvation", in which the TARDIS, departing after she has entered it, travels to New York City in Dodo's present, resulting in Dodo working with the Doctor and Steven to investigate mysterious beings who appear to be gods. In the Virgin Missing Adventures novel "The Man in the Velvet Mask", Dodo has sex and is infected with an alien virus which slowly corrupts her.