This story marked the debut of the first redesign for the TARDIS console room, which was shared for both the Third Doctor's and the Master's respective TARDIS interiors. It featured heavy alterations to the original roundel design of the TARDIS interior set that had remained in use since 1963, and a new time rotor prop. However, the exaggerated roundel design was subjected to criticism and suffered heavy damage during the filming break between Season 9 and Season 10, necessitating the disposal of the new set and the construction of a second redesign that would appear in the upcoming season.