Prologue (Second Edition)

In an alternative future in which the Soviet Union has won the Cold War, two MIT professors devise a daring plan to travel back to 1960s America to undo the past. As the time travelers scheme to avoid the watchful eyes of Soviet intelligence agents, they find themselves increasingly distrusted by their fellow resistance leaders. When they finally make their daring attempt, they must confront not only history, but also their own pasts.