Across an action-packed season of double-length episodes, Colin Baker's Doctor and companion Peri (Nicola Bryant) face off against a host of classic monsters and villains, including Daleks, Cybermen, Sontarans, Davros (Terry Molloy) and The Master (Anthony Ainley)-as well as introducing new female nemesis The Rani(Kate O'Mara)and the villainous slug-like Sil (Nabil Shaban). Also returning is Patrick Troughton as the Second Doctor, and his companion Jamie (Frazer Hines).