Purity Undreamed (audio anthology)

 was a full cast audio anthology released in August 2022 by Big Finish Productions as part of The Sixth Doctor Adventures.

Publisher's summary
The Sixth Doctor heads back to Earth with Mel and Hebe in tow, little dreaming what lies ahead. Accompanied by their new friend, Professor Patricia McBride, alien threats abound, dangers lurk, and the cost of meddling with time is more than anyone is prepared to pay.

2.1 The Mindless Ones by Paul Magrs

2.2 Reverse Engineering by Jonathan Morris

2.3 Chronomancer by Robert Valentine

Featured actors

 * Colin Baker
 * Bonnie Langford
 * Ruth Madeley
 * Cherylee Houston