BBC has released 4 new photos and a Next Time Trailer for the fourth episode of ‘Doctor Who’ Series 8, “Listen.” Written by Steven Moffat.

Episode Summary:

When ghosts of past and future crowd into their lives, the Doctor and Clara are thrown into an adventure that takes them to the very end of the universe.

What happens when the Doctor is alone? And what scares the grand old man of Time and Space? Listen!

What’s that in the mirror, of the corner of your eye?
What’s that footstep following, but never passing by?
Perhaps they’re all just waiting. Perhaps when we’re all dead,
Out they’ll come a-slithering, from underneath the bed!

“Listen” stars: Peter Capaldi (The Doctor), Jenna Coleman (Clara), Samuel Anderson (Danny Pink), Remi Gooding (Rupert Pink), Robert Goodman (Reg), Kiran Shah (Figure). Written by Steven Moffat and directed by Douglas MacKinnon.

‘Doctor Who’ airs on BBC One at 7:30pm and on BBC America on Saturdays at 9pm.