The Traitor (BBC audio story)

 was an audio adaptation of the eponymous 1977 comic story. The story was adapted by Paul Magrs and read by Jon Culshaw.

Publisher's summary
The Fourth Doctor and Sarah help rescue the survivors of a crashed spaceship, only to discover that they are scientists deliberately marooned on a distant planet. The people plead with the Doctor and Sarah for help - but what happens next is far from expected.

Deviations from comic story
to be added

Writing and publishing notes
to be added