While the Doctor carries out an investigation into ESP, Mike Yates asks Sarah to look into some strange goings on at a meditation centre he's attending.
Quest roles:
Richard Franklin(Mike Yates), Nicholas Courtney(Brig. Lethbridge-Stewart), Cyril Shaps(Professor Klegg), John Levene(RSM Benton), Christopher Burgess(Barnes), John Dearth(Lupton), Carl Forgione(Land), John Kane(Tommy), Kevin Lindsay(Styre / The Marshal), Terence Lodge(Moss), Andrew Staines(Keaver)