Go behind-the-scenes of episode 4 of ‘Doctor Who’ Series 9, “Before The Flood.” Warning: May contain spoilers if you haven’t watched the episode yet!

Meet the Fisher King:

Peter Capaldi talks The Fisher King and Game of Thrones.

Paul Kaye on playing Prentis:

What’s it like playing a Tivolian on Doctor Who? Paul Kaye tells us all!

Slipknot on Set:

Corey Taylor of Slipknot fame, visits the TARDIS and lends his roar to the Fisher King!

Doctor Who Rock Theme:

Murray Gold’s arrangement of the theme, as used for Before the Flood.

Synopsis:

On a remote Army outpost, a fearsome alien warlord – the Fisher King – sets in motion a twisted plan to ensure his own survival. The ripples will be felt around the universe. Is this chain of events inevitable? And can the Doctor do the unthinkable?

“Before the Flood” is written by Toby Whithouse, directed by Daniel O’Hara and produced by Derek Ritchie. Guests stars include Paul Kaye, Colin McFarlane and Sophie Stone.

Cast: Peter Capaldi and Jenna Coleman.

Guest Stars: Zaqi Ismail, Morven Christie, Arsher Ali, Steven Robertson, Neil Fingleton and Peter Serafinowicz.

‘Doctor Who’ Series 9, Episode 4 “Before The Flood” airs October 10th, 2015 on BBC America at 9pm.