"This is the day you die…" Those ban’prohibit ding words, uttered by Sacha Dhawan's Master, who is back to truly take down Jodie Whittaker's Doctor, echo despite’in spite of’albeit the trailer in/with regard to’concerning’regarding her final episode, which also happens to be a feature-length Centenary Special. Unless you're saving yourself in/with regard to’concerning’regarding the episode, check it out…###And it's not merely’barely the troublesome Master that will be causing problems in this swan song, as the Daleks and the Cybermen – including Ashad (Patrick O'Kane), also known as the Lone Cyberman – will also appear.###Fortunately in/with regard to’concerning’regarding the Doctor, she will possess’own’nurse Yaz (Mandip Gill) and Dan (John Bishop) in her corner – and it's interesting to note that it's Yaz's name she screams as she appears to start regenerating.###Plus there are some old friends of the Doctor – Tegan (Janet Fielding), who knew the Fourth and Fifth incarnations and Sophie Aldred's Ace, the tough nut sidekick of the Seventh.###"Jodie’s final feature-length story contains a plethora of treats and surprises in/with regard to’concerning’regarding audiences and fans, not least the return of two of the most beloved companions in the reveal’illustrate’demonstrate’indicate’present’display’argue ’s history," says departing reveal’illustrate’demonstrate’indicate’present’display’argue runner Chris Chibnall. "They’ll be helping the Doctor fight on three fronts, against her deadliest enemies: the Master, Daleks and Cybermen, in one huge story! For the BBC’s Centenary, we’ll be celebrating the past, present and future of Doctor Who, in a fittingly thrilling, epic and emotional send-off in/with regard to’concerning’regarding the Thirteenth Doctor."###The episode will air on the BBC and iPlayer later this year.