Part 4: 'The Satanic Mill'
by Edward Collier
Long buried animosities come boiling to the surface on an ancient and powerful satellite, in a final confrontation that could have unimaginable consequences.
Paul McGann (The Doctor), Nicola Walker (Liv Chenka), Hattie Morahan (Helen Sinclair), Mark Bonnar (The Eleven), Ewan Bailey (Father Locke / Security Orbs), Matthew Cottle (Paine), Robert Bathurst (Cardinal Padrac), John Woodvine (Galileo Galilei)
Directed by Ken Bentley
*Featuring the Eighth Doctor, Liv and Helen
*A Big Finish Audio Production