Dr Mark Altree is commissioned by David Fuller, CEO of a uranium exploration company to review historical data and provide advice as to where the tenement should be drilled. After doing that and providing guidance Altree is ordered to visit the site. Reluctantly he agrees and takes his wife and colleagues to show them where he had worked many years before. Following the field work Altree and his wife, Sonja, travel to Sweden to visit her aunt who is ill. During their stay in Stockholm, Altree solves the mystery disappearance of the husband of Sonja’s cousin.