New 'Doctor Who' Promo Teases Daleks, Missy and 'The Magician's Apprentice'

The BBC has debuted a trailer for the Season 9 premiere of "Doctor Who."

Titled "The Magician's Apprentice," it's the first episode of a two-part opener that concludes with "The Witch's Familiar." Written by Steven Moffat and directed by Hettie MacDonald ("Blink"), they mark the return of Michelle Gomez as Missy, the current incarnation of the Master.

Starring Peter Capaldi and Jenna Coleman, "Doctor Who" returns Saturday, Sept. 19, on BBC One and BBC America.

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