One Mile Down (audio story)

 was the second story in The Tenth Doctor Adventures: Volume Three, produced by Big Finish Productions. It was written by Jenny T Colgan and featured David Tennant as the Tenth Doctor and Catherine Tate as Donna Noble.

Publisher's summary
Donna and the Doctor take a holiday - in the beautiful underwater city of Vallarasee.

Things have changed since the Doctor last swam through it: Vallarasee is now enclosed inside an airdome. Judoon patrol historic sites, and instead of tourists wearing helmets to breathe, the native Fins are forced to adapt.

But leaks have begun to trickle into the dome, and the Doctor and Donna must convince the Judoon that disaster is imminent. Or else thousands will be trapped, as the waters rise...

Plot
to be added

Cast

 * The Doctor - David Tennant
 * Donna Noble - Catherine Tate
 * Judoon Captain / Clo - Nicholas Briggs
 * Patricia Derbyshire - Eleanor Crooks
 * Andrea - Rakie Ayola
 * Pickus - Christopher Naylor
 * Garth / Thispus - Robert Whitelock

Worldbuilding

 * Donna eats pear flavoured ice cream.
 * Donna wants to send a postcard to Wilf from the 51st century.

Continuity

 * Later in her timeline, Donna would encounter the Judoon again whilst investigating missing planets. (TV: The Stolen Earth)
 * The Doctor speaks Judoonese. (AUDIO: Judoon in Chains, TV: The Stolen Earth)
 * The Judoon can raise cities using an H2O scoop. (TV: Smith and Jones)
 * The Doctor says that wiping out another race to save your own doesn't end well, and he hasn't found a good way to save his people. (TV: The Day of the Doctor)
 * The Doctor shows a dislike for pears. (TV: Twice Upon a Time, PROSE: Human Nature, The Taking of Chelsea 426)
 * The Doctor jokingly refers to a "Platoon of Judoon in a lagoon". (TV: Smith and Jones, Fugitive of the Judoon, AUDIO: Judoon in Chains)