Showing Last of the Gaderene by Mark Gatiss

The aerodrome in Culverton has new owners, and they promise an era of prosperity for the idyllic village. But former Spitfire pilot Alex Whistler is suspicious - when black-shirted troops appear on the streets, he contacts his old friend Brigadier Lethbridge-Stewart at U.N.I.T. The Third Doctor is sent to investigate - and soon uncovers a sinister plot to colonise the Earth. The Gaderene are on their way.

An adventure featuring the Third Doctor as played by Jon Pertwee and his companion Jo