We bring you (another) bonus episode of The Power of 3 this week, although it's not strictly a Doctor Who book.
We're chatting with Nev Fountain, the acclaimed Big Finish author and the writer of the Mervyn Stone series.
He's got a new book out, The Fan Who Knew Too Much, and it's a murder-mystery which will very much appeal to not just Doctor Who fans, but sci-fi fans in general.
(Today's guest theme: Forty Years Of A Timelord by Alistair Lock and Andrew Beech)
