Tana is called in to help repair the beleaguered underground network in Czechoslovakia, who had been stymied after the so-called Prague Spring, when the reformist First Secretary, Alexander Dubček, well meaning attempts of reform were brought to heel seven years earlier by the arrival of Soviet tanks.
This is a well-researched novel with atmospheric descriptions of life under the yoke of Soviet rule.
A real page turner. Highly recommended.
Many thanks, Sandbagger!