"Investigative reporter Terry Scanlon follows up the strange goings on in Llanfairfach, with interviews with people there at the time, including Professor Clifford Jones and mysterious boss, Stevens."
Mark Gatiss
as Terry Scanlon
Tony Adams
as Mark Elgin
Stewart Bevan
as Professor Clifford Jones
Roy Evans
as Talfryn Pritchard
Ian Hallard
as Gary Talbot
Julia Dalkin
as Janet
Jonathan Rigby
as Sir Alec Douglas-Hodge
David Rees Talbot
as Evan Evans
Alexander Kirk
as Hopkins the Security
Jerome Willis
as Jocelyn Stevens
John Dearth
as BOSS (voice) (archive footage)
Paul Vanezis
Director
Writer
Producer
Steve Broster
Graphic Designer
Mark Ayres
Sound
Tim Savage
Colorist
Ian Simpson
Digital Effects Producer
Amy Noble
Makeup Artist
Liza Betts
Costume Design