sentences:  The pilot episode was adapted by Nicholas Briggs and John Dorney for Big Finish's "The Lost Stories" range for an audio story released in December 2010 and included on "The Second Doctor Boxset", although it did not feature the Doctor himself.In 1990, following the cancellation of the live action series, the BBC approached the Canadian animation house Nelvana to propose an animated continuation of the show.The cartoon series was to feature an unspecified new Doctor, incorporating elements of various BBC series Doctors.