Best book I ever read.
It's about a russian soldier that has been putten to a jaile, only for engineers and other techniquers with great inteligence and skills, they qere being used to build spionage items to spy on the EUA.
The writer was actually kept in that prison for years, together with fellow russions and some germans too.
It's not biographical, but a lot is true in this story,
The author has won a noble prize.