Under the microscope today is a novel by the godfather of Doctor Who fiction, Mr Terrance Dicks.
Today, Catastrophea, his Third Doctor and Jo Past Doctor Adventure for BBC Books, is examined.
We're delighted to feature never before seen (or in this case heard!) material from Terrance's archive, courtesy of his widow Elsa and biographer Simon Guerrier.
Editor Steve Cole drops by too, to reveal how this novel was commissioned.