
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...

as The Doctor

as Turlough

as Peri Brown

as The Master

as Timanov

as Amyand

as Professor Howard Foster

as Roskal

as Malkon

as Sorasta

as Curt

as Father

as Young Malkon

as Pilot

as Captain Lomand

as Zuko

as Lookout