Join Alex and Andy as they travel to Lanzarote (or is it Sarn?) for the penultimate Davison story Planet of Fire. What will they make of Peri's entrance and Turlough's exit? Why is this month's Dressed for Success such a bumper segment? How exactly does the Trion prison planet system work and was Sarn (or is it Lanzarote?) ever fertile? And if so, why?

Elsewhere the return of the 'Planet or Planot' quiz has a Blake's 7 twist and the Time Space Visualiser takes us back to 1984 and the present day.

Happy 'Boobs and Budgie Smugglers Sunday' to you all!

Don't miss our extra episode released today at 9am: an interview with Neil Cole, curator of the amazing Museum of Classic Sci-Fi which boasts a truly wondrous range of Doctor Who exhibits.