The book "Strangers on the Bridge" tells about one of the most outstanding cases in the history of espionage - the process "The United States of America against Rudolf Ivanovich Abel." The author - Abel's lawyer - James Donovan writes in detail about the preparation of the case, the hearing in court and cassation instances, and, finally, about its completion - the exchange in February 1962 on the Gliniker-trouser bridge of Colonel Abel for Francis Harry Powers.