Special Features
Audio commentary by actors Tom Baker (the Doctor), Louise Jameson (Leela), Michael Keating (Goudry) and director Pennant Roberts
Running from the Tax Man a look at the making of the story and the science behind it with Lousie Jameson, Michael Keating, director Pennant Robers, writer and historian Dominic Sandbrook and astronomer Marek Kukula (25 mins)
The Doctor's Composer - Part Two: concluding part of our look at the career of prolific composer Dudley Simpson, covering his work on the show in 1970s (18 mins)
Outtakes
Original BBC1 trailer
Photo gallery (4 mins)
PDF materials:
Radio Times listings
Production notes subtitle option
