From the BBC World Service and N.R.K. this is Death in Ice Valley.

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Maybe it's easier to conceal your identity if only you know who you are. It's hard to disappear these days.

Footprints are left in the real and online world. There's always an email address, a text message, CCTV.

In 1970, it was easier to live a life uncronocled, especially if you were trying to disappear.

I'm Mare Tigrath from NLK.

And I'm Neil McCarthy from the BBC, bringing you Episode 3.

The Remote Archive.

Thanks to all of you who've been in touch with your comments and thoughts.

As we've said, our investigation is ongoing and we're looking into some of the suggestions you've made.

If you think you have a specifically to share with us on this case, let us know.

Okay Neil, we have a few more facts at our fingertips now after our trip to Stavanger in the south of Norway, on the trail of the Easter Woman.

That's right, we have a name and a nationality from her hotel registration form which is quite exciting.

She's won Finella Lorke from Belgium.

What struck me is how vivid our witnesses' memories are of their very brief encounters with the Easter Woman in hotels or shops.

Well, you have to remember Norway was a very different country back then. Foreigners really stood out.

Even Neumann is the director of Norwegian Social Research and he can tell us more about that.

In Norway, immigration only started in the very late 60s.

So, you know, most people walking around in Norway would be lily white and in small places, most people would know one another.

It was a much more transparent world, as it were.

So, that meant that everything that happened out of the ordinary was easier to spot than today.

So, yes, diplomats stood out in Norwegian society. People simply knew that they were foreigners.

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