The Taking of Planet 5 is a BBC Books original novel written by Simon Bucher-Jones & Mark Clapham and based on the long-running British science fiction television series Doctor Who . It features the Eighth Doctor , Fitz and Compassion . It is, in part, a sequel to the television serial Image of the Fendahl . It also features references to many elements from the Cthulhu Mythos stories of H. P. Lovecraft , in particular the Elder Things and their ancient Antarctic city from At the Mountains of Madness .