Here is the list of the Season 5 of the Fourth Doctor Adventures from Big Finish. Bring it on!
5.1 - Wave of Destruction 
5.2 - The Labyrinth of Buda Castle
5.3 - The Paradox Planet
5.4 - Legacy of Death
5.5 - Gallery of Ghouls
5.6 - The Trouble with Drax
5.7 - The Pursuit of History
5.8 - Casualties of Time