It's a mystery that has intrigued Norway for nearly 50 years.
In November 1970, the badly burnt body of a woman was found in a remote spot in Norway's Isdalen valley.
Someone had cut the labels off her clothes, and scraped distinctive marks off her belongings - as if to stop her from being identified.
And as police started investigating her death, they uncovered a trail of coded messages, disguises, and fake identities - but never cracked the case.
Forty-six years later, Norwegian police and NRK journalists have decided to reopen the investigation.