The Fourth Doctor Adventures: Series 9: Volume 2

 was a full cast audio anthology released on February 2020 by Big Finish Productions. It featured the Fourth Doctor, Adric, Romana II and K9 Mark II.

Publisher's summary
The Planet of Witches by Alan Barnes

Details to follow.

The Quest of the Engineer by Andrew Smith

The TARDIS lands on a planet which reconfigures itself like a jigsaw.

Featured actors

 * Tom Baker
 * Lalla Ward
 * Matthew Waterhouse
 * John Leeson

Cover gallery
to be added