31. Phil Pascoe: ...Ish (2002)
The Doctor and Peri visit a conference of lexicographers. Mere minutes before she is about to hold her opening speech, Professor Osefa de Palabra Hftzbrn is found dead in her office — but by own her own hand, or by someone else's?
A detective story with lots of in-jokes, wordplay, and discussions about the nature of language, this audio drama combines two of my favourite things: Doctor Who and linguistics. How could I not enjoy it?