Colin Baker

Painter Hedley Shale is found murdered with two bullets in his chest in the upstairs bedroom at his South London home. Lying dead nearby is his secret lover.

Geraldine Merrick suspects vandalism when crop circles appear in her wheatfield. Terry is convinced it is the work of aliens.

On Telos the Doctor is reintroduced to the Cyber Leader and meets the Cryons, the planet's original inhabitants who want their planet back and will go to any lengths to do so.