A slight different story approach here.

A woman dong a ghost walk on modern day Earth and the Tardis arriving in cave a few centuries before hand. Seemingly unconnected until one of the ghosts turns out to be the Doctor.

So part one is about the Doctor, Adric, Nyssa and Tegan arriving in the caves and something not right. Its very atmospheric, holds your attention and just enough mystery to make you want to hear more.

Part two is concerned with he fates of Adric and Nyssa. Both having escaped the doom awaiting them in part one, find themselves still in the past, alone, each facing their own problems. Not much from the Doctor in this episode. But still you don’t know whats going on.

The final two parts deals with the Doctor and Tegan, though it is just the Doctor by part 4.

I quite enjoyed it. It isn’t the normal run around. The fact that the companions are written out, each facing a different ‘end’ really heightens the peril of the situation the Doctor has found himself in. Its been done quite well, you don’t really know how the Doctor became a ghost or how things will be put right.

There are a couple of swipes at Tegan, just the odd comments made at her expense - made me smile.

The resolution was a little unsatisfying, its virtually wave a magic wand and the companions are fine and well again.

Its a good audio, not quite great or best of the best. But its a bit more original and refreshing.