Moran – Colin McFarlane
Cass – Sophie Stone
Lunn – Zaqi Ismail
O’Donnell – Morven Christie
Bennett – Arsher Ali
Pritchard – Steven Robertson
Prentis – Paul Kaye
Fisher King – Neil Fingleton
Voice of Fisher King – Peter Serafinowicz
Roar of Fisher King – Corey Taylor
General production staff
Production Executive – Gordon Ronald
Line Producer – Tracie Simpson
Production Manager – James DeHaviland
Location Manager – Nick Clark
Unit Manager – Iestyn Hampson-Jones
Production Co-ordinator – Adam Knopf
Assistant Production Co-ordinator – Sandra Cosfeld
Production Assistants – Hannah Jones, Jamie Shaw
Unit Drivers – Sean Evans, Kyle Davies
Unit Medic – Glyn Evans
Production Accountant – Ceredig Parry
Assistant Accountant – Justine Wooff
BSL Monitor – Jean St. Clair
Camera and lighting department
1st Assistant Director – Scott Bates
2nd Assistant Director – Danielle Richards
3rd Assistant Director – Gareth Jones
Assistant Directors – Chris Thomas, Nick Goolding
Script Supervisor – Nicki Coles
Camera Operator – Mark McQuoid
Focus Pullers – Jonathan Vidgen, Steve Rees
Grip – John Robinson
Assistant Grip – Sean Cronin
Camera Assistants – Cai Thompson, Matthew Lepper, Scott Waller
Gaffer – Mark Hutchings
Best Boy – Andrew Gardiner
Electricians – Andrew Williams, Bob Milton, Gareth Sheldon, Gawain Nash, Matt Wilson
Art department
Supervising Art Director – Tristan Peatfield
Art Department Accountant – Bethan Griffiths
Production Buyer – Sarah Frere
Set Decorator – Adrian Anscombe
Prop Buyers – May Johnson, Vicki Male
Storyboard Artist – Mike Collins
Concept Artist – Chris Lees
Graphic Artist – Matthew Clark
Standby Props – Liam Collins, Ian Davies
Standby Carpenter – Paul Jones
Prop Hands – Scott Howe, Nigel Magni, Matt Watts
Standby Art Director – Nick Murray
Rigging – Shadow Scaffolding
Head Scenic Artist – Clive Clarke
Scenic Painters – Steve Nelms, Matt Weston, Paul Murray
Storeman – Jamie Southcott
Prop Master – Paul Smith
Props Chargehand – Kyle Belmont
Props Driver – Gareth Fox
Props Makers – Alan Hardy, Jamie Thomas, Paul Lynch, Jamie Farrell
Construction Manager – Terry Horle
Construction Chargehand – Dean Tucker
Construction Driver – Jonathan Tylke
Practical Electricians – Christian Davies, Austin Curtis
Draughtpersons – Kartik Nagar, Ursula Marshall
Chargehand Carpenter – John Sinnott
Carpenters – Tim Burke, Lawrie Ferry, Matt Ferry, Chris Daniels, Julian Tucker, George Rees, Dan Berrow, Keith Richards, Campbell Fraser
Title Concept – Billy Hanshaw
Costume department
Costume Supervisor – Simon Marks
Assistant Costume Designer – Georgie Sayer
Costume Assistants – Andie Mear, Ian Fowler, Jenny Tindle
Make-up and prosthetics
Make-up Supervisor – Sara Angharad
Make-up Artists – Megan Bowes, James Spinks
Movement
Stunt Co-ordinators – Crispin Layfield, Gordon Seed, Jo McLaren
Stunt Performer – Matt Crook
Choreographer – Ailsa Berk
Casting
Casting Associate – Alice Purser
General post-production staff
Post-production Supervisor – Nerys Davies
Post-production Co-ordinator – Samantha Price
Assistant Editor – Becky Trotman
On-line Editor – Geraint Pari Huws
Special and visual effects
VFX Editor – Dan Rawlings
Special Creature Effects & Prosthetics – Millennium FX
Colourist – Gareth Spensley
Sound
Sound Recordist – Deian Ll┼╖r Humphreys
Dubbing Mixer – Mark Ferda
Sound Maintenance Engineers – Tam Shoring, Christopher Goding
Dialogue Editor – Darran Clement
ADR Editor – Matthew Cox
Effects Editor – Harry Barnes
Foley Editor – Jamie Talbutt
Foley Artist – Julie Ankerson
The Doctor travels back in time to uncover the origin of the haunting. He discovers an alien craft and a being known as the Fisher King, which uses the dead as transmitters for a signal that ensures its survival. By altering events, the Doctor breaks the chain of causality and defeats the creature. Clara and the crew are saved, resolving the paradox.
The Doctor appears as a ghost but reveals he used a holographic projection to trick the others while investigating the timeline.
The Doctor directly addresses the audience to explain the Bootstrap Paradox, where information or events exist without a clear origin due to time travel loops.
The Fisher King is the alien antagonist whose plan involves using the ghosts to transmit coordinates and escape death.
The Doctor traps the Fisher King in a chamber where it is ultimately destroyed by the environment of the base.
The episode focuses on causality, time travel logic, and sacrifice, while also continuing the exploration of fear and understanding the unknown.
