First broadcast 19th November 1984.

Workmen digging in a building discover the remains of a 300+-year-old devil cult.

Barbi Benton ... Caroline Trent
Gareth Hunt ... Peter Whiteway
Brian Deacon Brian Deacon ... Alan Yardley / Martin
Peter Wyngarde ... Daniel Haswell / General Haswell
Patricia Hayes ... Granny Waters (as Pat Hayes)
Carol Royle ... Kim Osborn / Catherine Parkes
Ralph Michael ... Father Harris
Gary Waldhorn ... Inspector Crane
Robert James ... Father Ambrey / Packard
Richard Hampton ... Ted Pinder / David Pritchard
Angela Grant ... Jill
Ray Armstrong ... Sergeant Mills
Peter Baldwin ... Dr. H. Talbot
Jona Jones ... Policeman
Tim Pearce ... Brinkley / Robert Ford
Michael Kingsbury ... Police Constable Hopkins
Christopher Farries ... Military Aide
Peter Macklin ... Military Policeman (as Peter Macklen)
Simon Sutton ... Male Nurse
Danny McCarthy ... Press Photographer
Sean Barry-Weske ... Major