Two episodes of the classic sci-fi series featuring the Fifth Doctor, Peter Davison, and the shape-changing android Kamelion. In 'The King's Demons' (1983), the renegade Time Lord forces Kamelion (Gerald Flood) to pose as King John in 13th century England. 'Planet of Fire' (1983) sees the Doctor (Davison) and Turlough (Mark Strickson) arriving in Lanzarote on Earth to investigate the transmission of an unusual signal that turns out to be emanating from a mysterious alien artefact.

University lecturer Norman Taylor earns the enmity of his colleagues when it is rumoured that he has obtained a major promotion. However, this is no ordinary professional jealousy; someone is using the occult to try and ruin Norman's life. After his own wife falls prey to the powers of darkness, Norman is forced to do battle with demonic forces which bring him to the verge of Hell itself.