BBC1 premieres the 18th episode of Terry Nation’s science fiction series Blake’s 7. Jane Sherwin guest stars. This episode is the beginning of a story arc running through the remainder of the second season, concerning Blake’s search for the Federation’s central control facility; to up the stakes, the character of Gan (played by David Jackson) is killed off, though the first choice of series creator Terry Nation would have been the popular character of Vila. 
Blake decides to mount a raid on Central Control, the heart of the Federation on Earth. He has contacted Kasabi, the rebel leader on Earth, and made arrangements for liasons with her troops, but before the Liberator arrives, Kasabi and her troops are captured and Travis forces her daughter to comply with his plan, which involves leading Blake and Gan into a trap and stealing their teleport bracelets. Avon and Vila soon arrive, and the crew is off again, working its way through a minefield of traps and finally reaching Central Control: an empty room where Travis and his guards wait. Jenna rescues them by holding Servalan hostage with the help of Kasabi’s daughter, and the crew flees. Travis lobs a percussion grenade at them while they are all still underground, and the explosion triggers a collapse of the roof which kills Gan.
written by Terry Nation
directed by George Spenton-Foster
music by Dudley SimpsonCast: Gareth Thomas (Blake), Sally Knyvette (Jenna), Paul Darrow (Avon), Jan Chappell (Cally), Michael Keating (Vila), David Jackson (Gan), Peter Tuddenham (Zen, Orac), Jacqueline Pearce (Servalan), Brian Croucher (Travis), Jane Sherwin (Kasabi), Yolande Palfrey (Veron), Alan Halley (Arle), Martin Connor (Berg), Sue Bishop (Mutoid)
LogBook entry by Earl Green