Madeleine Mills

The TARDIS arrives on the unnamed planet of the Gonds, who are ruled and taught in a form of self-perpetuating slavery by the alien Krotons — crystalline beings whose ship, the Dynatrope, crash-landed there thousands of years earlier after being damaged in a space battle. The Krotons are in suspended animation, in a crystalline slurry form, awaiting a time when they can be reconstituted by absorption of mental energy. Periodically, the two most brilliant Gond students are received into the Dynatrope, nominally to become "companions of the Krotons", but in truth to have their mental energy drained, after which they are killed.

Please Sir! is a London Weekend Television produced situation comedy, created by writers John Esmonde and Bob Larbey and featured the actors John Alderton, Deryck Guyler, Joan Sanderson, Noel Howlett, Erik Chitty and Richard Davies. The series ran for 55 episodes between 1968 and 1972.

Adaptations of mystery stories written by Sir Arthur Conan Doyle's contemporary rivals in the genre.