The Deep (audio story)

The Deep was a 2010 Big Finish audio short story read by Peter Davison and featuring the Fifth Doctor and Nyssa. It was likely most notable for being the first piece of Doctor Who fiction written by the award-winning author of young adult fiction, Ally Kennen.

Narratively, it is one of the rare stories that dealt with repairing the chameleon circuit.

Summary
When Nyssa attempts to fix the chameleon circuit, the TARDIS turns into a whale. Can the Doctor and she recapture it and turn it back into the old TARDIS before it's stuck in the form of a whale forever?

Characters

 * Fifth Doctor
 * Nyssa

Continuity
to be added

Timeline
Though the play gives no specifics as to its timing, The Deep takes place somewhere between Time-Flight and Arc of Infinity, because Nyssa is travelling alone with the Doctor.