Gryphon – Terrence Hardiman The Storyteller – Sophie Ward Toad – Su Douglas The Hexford Invasion (released 8 December 2011) The Doctor is reunited with his TARDIS and uses it to return Alex and Boolin to the Robotovs. Mrs Wibbsey is back at present day Nest Cottage, with the Skishtari Egg buried deep beneath it, as it always has been. While the Doctor is away, nine months quietly go by for her. Then Mike Yates returns, along with his former employers, UNIT, on the trail of alien activity. Mike has also teamed up with a strange little man claiming to be the Second Doctor. Cast The Doctor – Tom Baker Mrs Wibbsey – Susan Jameson Captain Mike Yates – Richard Franklin The Visitor – David Troughton Reverend Tonge – Cornelius Garrett Deirdre – Nerys Hughes Tish – Joanna Tope Survivors in Space (released 8 December 2011) The Skishtari spaceship failed to find their precious Egg and in the process, the entire village of Hexford is accidentally thrown through a wormhole and dumped on a barren moon in a strange galaxy. For three months, the villagers cope, with only Captain Yates and his mysterious, mop-topped little friend to maintain order. But the Robotovs' guards are closing in, as are the Skishtari. Finally, the TARDIS tracks down the misplaced hamlet. The Fourth Doctor and Mrs Wibbsey make their final confrontation, bringing with them the Skishtari Egg, just as it is about to hatch. Cast The Doctor – Tom Baker Mrs Wibbsey – Susan Jameson Captain Mike Yates – Richard Franklin The Visitor – David Troughton Reverend Tonge – Cornelius Garrett Deirdre – Nerys Hughes Tish – Joanna Tope Lucius – Sam Hoare Tsar – Paddy Wallace Crew Writer – Paul Magrs Producer & Director – Kate Thomas Script Editor & Executive Producer – Michael Stevens Cover Illustrators – Brian Williamson Continuity This story is a sequel to Hornets' Nest and Demon Quest, with the Fourth Doctor, Yates and Mrs Wibbsey reuniting. Serpent Crest begins by picking up from the cliffhanger at the end of Demon Quest. The Fourth Doctor mentions that the Time Lords removed certain events from his memory, just before they force regenerated him at the end of The War Games. In particular, they hid memories of adventures he had with his other incarnations. The Second Doctor encountered his previous and following selves in The Three Doctors. He met them