The Claws of Axos standard. The story includes interior scenes inside the TARDIS for the first time in the Pertwee era of the show. The configuration of the TARDIS set-up is unique for this adventure. The TARDIS monitor appears to be a circular screen embedded in one of the 'roundels' in the console room wall, rather than the traditional rectangular screen (this feature is seen again once, a year later, on the unique set built for "The Time Monster"). The doors of the console room do not open directly into the exterior as in all other adventures; instead they open into a corridor that
Blue wall of silence Blue wall of silence The blue wall of silence, also blue code and blue shield, are terms used in the United States to denote the informal rule that purportedly exists among police officers not to report on a colleague's errors, misconducts, or crimes, including police brutality. If questioned about an incident of alleged misconduct involving another officer ("e.g.," during the course of an official inquiry), while following the code, the officer being questioned would claim ignorance of another officer's wrongdoing or claim to have not seen anything. The code is considered to be an example of police corruption and misconduct.