Starring Tom Baker as the fourth Doctor, Lalla Ward as the second Romana, and John Leeson as K-9. The TARDIS crew have unknowingly become embroiled in a web of deceit. A trap has been laid across time and they have no possible means of escape. Destiny has ensnared them. The Doctor is finally getting the chance to see the Conglomerate's work at first hand. Romana is working to save the alien Laan once and for all. K9 is returning to Ancient Britain in search of an unusual power source. Today one of them will die.