Jenna Coleman vs Pearl Mackie: Becoming the Companion

Introducing JENNA (LOUISE-)COLEMAN as CLARA OSWALD and PEARL MACKIE as BILL

Fathom Events have released a clip of a new bonus documentary to be screened with Pearl Mackie’s debut as Bill Potts in The Pilot (Steven Moffat), Becoming the Companion:

It’s similar to the promotional video (especially in title) that was made for Jenna(-Louise) Coleman’s debut as Clara Oswald in The Snowmen (Steven Moffat), Becoming the Companion: