"With one glance he will destroy your body and wither your soul."

Second-Lieutenant Lethbridge-Stewart gets more than he bargained for when he is assigned to map out Greek islands at the end of the Second World War.  Even if he lives to tell the tale, will he remember it?

Years later, Brigadier Lethbridge-Stewart and his colleagues at UNIT investigate a spate of unexplained deaths and murders.  Meanwhile, the Third Doctor and Jo are caught up in strange events in the small English Village of Hob’s Haven.

As preparations get underway for a massive pop concert, a sinister cult prepares for a day of reckoning - business as usual for UNIT.  But can the Brigadier help prevent the end of the world?  His friends and colleagues are not so sure, because this time, the Brigadier has fallen in love...

This special 40th Anniversary Doctor Who adventure features the Third Doctor, Jo Grant, and UNIT.  It is written by Barry Letts - Producer of the Third Doctor’s television stories - and Terrance Dicks - Script Editor for the latter part of the Second Doctor’s era and all the Third Doctor television stories.

'Apparently the thigh bone had been bitten clean through - with one snap of the teeth.' 'There isn't a creature on Earth capable of doing that!' After a skirmish with an alien warrior in the Middle Ages, Sarah Jane Smith's life as a journalist in Croydon seems rather tame. She decides to track down the enigmatic character who took her back in time; with the Doctor, a good story is never far away. Her intuition pays off. The Doctor and UNIT are called to investigate a grisly murder at Space World, a futuristic new theme park. Tagging along, Sarah and her new colleague Jeremy soon find themselves facing huge crab-like creatures, mind-controlling devices and vicious flesh-eating beetles. And those are just the attractions...

This is an adaptation by Barry Letts of his own radio play, in which Jon Pertwee, Elisabeth Sladen and Nicholas Courtney reprised their roles as the Doctor, Sarah, and Brigadier Lethbridge-Stewart. Barry Letts is the writer of several of the scripts for the TV series, and was producer of the show from 1970 to 1974.

Doctor Who is strangely concerned about Professor Horner's plan to cut open an ancient barrow near the peaceful village of Devil's End.

Equally worried is Miss Hawthorne, the local white witch, who foretells a terrible disaster if he goes ahead.

The only person who wants the Professor to open the barrow is the new vicar (in truth THE MASTER) whose secret ceremonies are designed to conjure up from out of the barrow a horribly powerful being...

'When the barrier gives way this planet will be flooded by all the evil in N-Space. And, at the moment, I have no idea how to stop it.'

Sarah Jane Smith, on holiday with her chum Jeremy and a bad case of writer's block, is amazed to find the Brigadier in the same part of Italy. He is there to help a distant relative whose tiny island home has been threatened by American mobster Max Vilmio.

When the ghosts that haunt the island's crumbling castle are joined by less benign spectres, the Brigadier summons the Doctor - who discovers that the whole of mankind is threatened by the plans of the ruthless Vilmio and his mysterious, hooded henchman.