Warning: Spoilers ahead for Doctor Who season 15, episode 1, "The Robot Revolution."When the Cybermen appear in Doctor Who, the episodes tend to have certain hallmarks, and "The Robot Revolution ...

The Cybermen return for their third adventure with the dome headed Cyber Controller making his first appearance in the series. The Sixth Doctor would return to Telos and the ‘Cyber tombs’ once ...

Indeed the Fifth Doctor's last spoken word was ‘Adric’. The return of the Cybermen to the series, their first appearance since Revenge of the Cybermen in 1975, was a well-kept secret.