Overview

A strange signal from Earth draws the TARDIS to the island of Lanzarote, where Turlough rescues a young American girl, Peri, from drowning. Among her possessions is an artefact bearing an alien symbol - the same triangular mark that Turlough has branded into his arm. The mystery deepens when Kamelion falls under the control of a powerful mind, and the TARDIS travels to the volcanic world of Sarn. As Turlough is forced to face his past, the Fifth Doctor must stop his oldest enemy from harnessing the revitalising powers of Numismaton gas...

Genres

Cast

Peter Davison

The Doctor

Mark Strickson

Turlough

Nicola Bryant

Peri Brown

Anthony Ainley

The Master

Peter Wyngarde

Timanov

Dallas Adams

Professor Howard Foster

Barbara Shelley

Sorasta

John Alkin

Captain Lomand