The Crossing by Ted Allbeury
Woven around a real-life incident, this novel produces an intriguing explanation to a mystery. In 1960 an American pilot was shot down while on a spying mission over the Soviet Union. Later he was exchanged for a high-powered Soviet agent - an exchange never explained, until now. The author has written numerous novels which have been translated widely. The most recent is The Seeds of Treason.of Treason.