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10/10 The Fourth Doctor and Mrs Wibbsey finally track down Hexford.
9/10 The whole hamlet of Hexford passes through a wormhole.
8/10 An irresistible alien power is intent on moving the hamlet of Hexford.
7/10 Mike turns up with someone claiming to be the Second Doctor.
6/10 The Skishtari Egg exerts control over Andrew, allowing him to unleash a creature.
5/10 The Doctor, Mrs Wibbsey and Alex become ensnared in a labyrinth of magical rooms.
4/10 Discovering the power of the Egg, the Doctor realises it can't be entrusted to a child.
3/10 The Doctor and Mrs Wibbsey are returned to Nest Cottage but the TARDIS is 150 years away.
2/10 Humans try to overthrow the Robotov Tsars. The Tsarina creates a cyborg boy.
1/10 Seized by robots, the Fourth Doctor and Mrs Wibbsey are taken to a space palace.