Arya gonna go my way?

I'm pretty sceptical about this rumour of Maisie Williams as the next Doctor Who companion. Apart from the minor detail that she's got other filming commitments for the foreseeable, most of the time all this speculation gets drummed up and then the new companion is a completely new character. (Jenna Coleman had already been announced as Amy's replacement when Clara made her surprise early appearance.)

"The Girl Who Died" / "The Woman Who Lived" by Jamie Mathieson, Steven Moffat and Catherine Tregenna, directed by Ed Bazalgette. Spoilers after the cut.