Doctor Who Series 10: 14 Easter Eggs & References You Might've Missed In 'Smile'

13. Mina Anwar

Speaking of the episode's pre-credits scene, it features a face that should be familiar to Doctor Who fans. Mina Anwar stars here as a beleaguered colonist whose mother has just died. She previously appeared as a regular on spin-off The Sarah Jane Adventures as Gita, the mother of Sarah's teenage neighbour Rani Chandra.

This makes two episodes in a row that have starred returning Whoniverse actors. The Pilot also saw Jennifer Hennessy return to the show, after appearing in an episode in 2007.