An adventure featuring the Fourth Doctor, Sarah, Harry & U.N.I.T.
Another adventure for everyone’s favourite time-traveller. Answering the Brigadier’s space/time telegraph, the Doctor (Tom Baker), Sarah (Elisabeth Sladen) and Harry (Ian Marter) arrive in the village of Tulloch, near Loch Ness.
A series of attacks have taken place on local oil rigs, and many are blaming the legendary monster. The Doctor discovers the creature to be the Skarasen - cyborg pet of invading aliens the Zygons.
Their own planet having been destroyed and their spaceship crippled, these deadly shape-shifters are now intent upon taking control of the planet Earth.
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