Doctor Who: Who's Ashildr? Video Released

The BBC has released a new preview of this week's episode of Doctor Who, "The Woman Who Lived."

The video shows a conversation between the Doctor (Peter Capaldi) and Ashildr (Maisie Williams) hundreds of years after the events of "The Girl Who Died." Ashildr no longer remembers her name, and barely remembers her life in that small Viking village. Now, she describes herself as "her own companion," allowing the Doctor to see what his near immortal existence might be like without his own travelling companions.

Check it out below.

In "The Woman Who Lived," In "The Woman Who Lived," it's England, 1651. Deadly highwayman 'the Knightmare' and his sidekick stalk the dark streets of London. But when they find loot that is not of this world, they come face to face with the Doctor. Who is the Knightmare in league with? And can the Doctor avoid the hangman's noose and protect the Earth from a devilish betrayal?

Doctor Who airs Saturdays at 9 p.m. ET on BBC America.