The Doctor investigates ESP; Mike Yates asks Sarah to examine the mysterious goings on at a meditation centre he's attending.
An archaeologist allies with a Cyberman unearthed by an expedition on the planet Telos. With Patrick Troughton.
Only a last-minute rescue can save Romana, the fourth segment and the kingdom from Grendel's infamy.
Count Grendel realises that Romana is a friend of the Doctor; the Doctor works android Prince Reynart's speech circuits.
