Colette Gleeson

Meglos sheds a cactus disguise and assumes the Doctor's form to steal the Dodecahedron from the planet Tigella. With Tom Baker.

The Doctor must convince the Tigellans of his innocence if he is to stop Meglos from using the dodecahedron to decimate their world.

Will Romana be able to escape the Gaztaks? What pressing appointment awaits the Doctor?

The Doctor's look-alike invades Tigella and a surprise awaits Romana behind the burnt vegetation.