London, in the summer heatwave of 1930. The Doctor is visiting with Romana and K9 in order to return some library books, but traces of time pollution may change his plans.
A seaside hut holds a strange secret. A biscuit millionaire is hiring assassins. Deadly butlers and solicitors stalk the streets.
There is an odd smell in the air. And it might just mean the death of everyone on the planet.
Written By: Gareth Roberts, adapted by John Dorney
Directed By: Nicholas Briggs
Tom Baker (The Doctor), Lalla Ward (Romana), John Leeson (K9), Terrence Hardiman (Stackhouse), Derek Carlyle (Orlick), Richard Braine (Percy Closed), Abigail McKern (Felicia), Annabel Mullion (Julia), Mark Bonnar (Porteus), Tim Bentinck (Colonel Radlett), Andrew Bone (Woodrow), Jane Slavin (Harriet),