About the book: 1995 / The detective agency "Three Detectives" continues to unravel the most mysterious cases, even if they are connected with old crimes, as was the case in the story "Gold" Vikings,” or with modern technological development, as described in the second story, “Computer Virus.” In both cases, the heroes of the book had to go through many tests before they could unravel these mysteries. Design by L.A. Witte, Illustrations by V.L. Galdyaev