the TARDIS. This was set up with Nyssa's collapse at the end of this story. Cast notes Kwouk later played Doctor Hayashi in the audio play Loups-Garoux while Paul Shelley appeared in The Whispering Forest. Commercial releases In print A novelisation of this serial, written by Terrance Dicks, was published by Target Books in April 1983. Home media Four to Doomsday was released on VHS in September 2001. A DVD of the story was released on 15 September 2008. This serial was also released as part of the Doctor Who DVD Files in Issue 105 on 9 January 2013. The serial was released on blu-ray in December 2018 as part of "The Collection - Season 19" box set. Notes References External links Target novelisation Fifth Doctor serials Doctor Who serials novelised by Terrance Dicks 1982 British television episodes Fiction about consciousness transfer Fiction set in 1981