Paul Lavers

On the feudal planet of Tara, a count mistakes Romana for her android double and holds her captive, complicating the Doctor's pursuit of the fourth segment of the Key to Time.

The evil Count Grendel holds Romana, the Princess and the Prince hostage as part of his plan to usurp the throne of Tara.

Count Grendel realises that Romana is a friend of the Doctor; the Doctor works android Prince Reynart's speech circuits.

Only a last-minute rescue can save Romana, the fourth segment and the kingdom from Grendel's infamy.