Pest Control (audio story)

Pest Control is a made-for-audio Tenth Doctor story, written by Peter Anghelides and produced for BBC Audio, with a release occurring in the spring of 2008.

Read by David Tennant, the story is released under the same format as the BBC Books Tenth Doctor Adventures book series and their associated audio book adaptations, but was released exclusively to audio. The story features the character of Donna Noble, who makes her first BBC Books appearance in Pest Control, months prior to the release of her first adventures in print.

Plot
The Doctor and Donna encounter a group of soldiers fighting a war against a race of centaurs, a war complicated by the emergence of parasitic insect creatures and a giant exterminating robot.

Continuity

 * There is nothing overt to suggest where during Donna's travels with the Doctor this takes place. Presumably it takes place prior to Turn Left and probably after Planet of the Ood as that episode detailed Donna's first visit to another planet. Donna also thinks about all the death she's seen and asks if it has hardened her, suggesting she has been travelling with the Doctor for awhile.
 * The Doctor and Donna once again are forced to reiterate that they are not a couple, as they do frequently in the TV series proper.
 * The Doctor references Donna's "extensive wardrobe", a reference to the copious amount of baggage she initially brought with her (DW: Partners in Crime).

Behind the scenes

 * The liner notes erroneously credit Murray Gold with composing the Doctor Who theme music, instead of Ron Grainer; although Pest Control clearly takes place after the events of Partners in Crime, the theme arrangement from the 2005-2007 seasons is used instead of the 2008 season arrangement.