by Baker. Charlie Jane Anders of io9 listed the cliffhanger to Episode Two—in which it appears the Doctor is evil—as one of the greatest cliffhangers in the history of the programme in 2010. Commercial releases In print Terrance Dicks' novelisation was published by Target Books in February 1980. Home media It was released on a two tape VHS set in March 2000 and on DVD on 5 May 2008. The DVD has optional brand-new CGI effects. The NTSC Region 1 version was released on 3 September 2008. It has also been released in a DVD box set titled Bred for War, along with The Time Warrior, The Sontaran Experiment, and The Two Doctors. This serial was also released as part of the Doctor Who DVD Files in issue 118 on 10 July 2013. References External links Target novelisation Fourth Doctor serials Doctor Who serials novelised by Terrance Dicks 1978 British television episodes