serial, so only three Daleks appear on screen at any one time. One of the Daleks is painted gold, so only two regular casings are seen in shot. Film editing is used to attempt the illusion of more than three Daleks. The final battle at Auderly House was disliked by viewers, as it was quite obvious that only three Daleks were attacking. On the 2011 DVD release, CGI was used to revamp the scene, making it appear that more Daleks were attacking the house. Early in the first episode, there is a scene where the Doctor and Jo are working on the TARDIS console in the Doctor's lab. A mistake by the Doctor causes another Doctor and Jo to briefly appear at the entrance to the lab and then vanish. Originally the serial was to end with a scene where the Doctor and Jo went back to the lab, and saw their earlier selves working on the TARDIS console as before, after which they would vanish. However, director Paul Bernard refused to film it, saying "Once it's over, it's over". Script editor Terrance Dicks would later restore the scene in his novelisation of the story. This story features the TARDIS console once more outside of the TARDIS itself, as in The Ambassadors of Death and Inferno. This serial is unusual because episodes two and three begin with the cliffhanger music that ended the previous episode being played again. Filming locations Dropmore House was instead used as the location for the peace conference. Brentford Towers in Green Dragon Lane, Brentford was used to portray the Controller's futuristic base. Cast notes Scott Fredericks later played Max Stael in Image of the Fendahl (1977). Jimmy Winston had previously been the keyboard player in the rock band Small Faces. Broadcast and reception The story was edited and condensed into a single omnibus edition for broadcast on BBC1 at 7 pm on 3 September 1973, with viewing figures of 7.4 million. Paul Cornell, Martin Day, and Keith Topping wrote of the serial in The Discontinuity Guide (1995), "A clever (if unoriginal) idea which is spoiled by the pointless inclusion of the Daleks themselves. The series' first proper look at some of the complexities of time travel is handled well even if some of the international politics is moronic." In 2009, Patrick Mulkern of Radio Times awarded it four stars out of five. He noted that