The Doctor, Fitz and Compassion arrive in a gleaming chrome-city, with hover cars, and all the mod cons you could possibly want - and it's the year 2019.

But what's happened to the Mods and Rockers, who are still fighting each other?

We speak with author Steve Lyons, editor Steve Cole, and feature an audio clip from the spin-off release featuring the aliens from this book, the Makers.