Wolf Winter Author:Clare Francis In the chill of the Cold War, two Norwegians are shot dead after straying into Soviet wilderness, killings that will bind together three people in a web of treachery and passion: Halvard Starheim, veteran explorer, Ragna Johansenn, widow of one of the dead men and Rolf Berg, a Norwegian journalist.
I have not read the book but here is the description from the back cover. "It is cold. Blood stains the snow on the Russia/Finland border. Two men and the woman who loves them both race against time to unravel a frozen web of intrigue and treachery that stretches from the Cold War back to the chill of the Nazi occupation."