the televised serials The Daleks and Dalek Invasion of Earth and elements later appeared in the Daleks comic strip that later ran in TV21. The Daleks also play a major role in the first produced stageplay to feature the Doctor. Doctor Who and the Daleks in the Seven Keys to Doomsday was written by Terrance Dicks and directed by Mick Hughes and ran at London's Adelphi Theatre over the 1974-75 Christmas season and was expected to tour England until April 1975. However the tour was cancelled at the 11th hour. Trevor Martin played an alternate version of the Fourth Doctor in this play, which takes place immediately after the Third Doctor's regeneration in Planet of the Spiders (the play was staged before Tom Baker's official debut as the Fourth Doctor in early 1975 although Baker had appeared at the close of Planet of the Spiders). The play co-starred former Doctor Who companion Wendy Padbury (playing a different character named Jenny). Also in the cast was Simon Jones as the "Master of Karn", several years before he worked with Doctor Who writer Douglas Adams on The Hitchhiker's Guide to the Galaxy. The play was not well-attended by audiences as it debuted during an upswing of IRA violence in London. UNIT was the focus of Recall UNIT (or, The Great Tea Bag Mystery), a play mounted in August 1984 at the Moray House Theatre in Edinburgh. The play was directed and co-written by Richard Franklin, who had played Mike Yates in the series, and he reprised the role for the play, along with John Levene who returned as Sergeant Benton. The Daleks once again returned, as did Nicholas Courtney whose recorded voice allowed Brigadier Alistair Lethbridge-Stewart to also take part in the play, albeit off-stage. Doctor Who - The Ultimate Adventure was mounted at Wimbledon Theatre in London for several months starting in March 1989. This musical play paired the Doctor with a set of new companions in a battle against not only the Daleks but the Cybermen as well. Jon Pertwee initially starred in the play for the first half of its run, reprising the Third Doctor. For the second half of the run, Colin Baker starred as the Sixth Doctor. For two performances during Pertwee's tenure, Davis Banks (best known for playing various Cybermen in the TV series) played the Doctor when Pertwee fell ill. From October to November 2010,