George Koyne, an Iowa-born scientist, disappears in 1948. Concerned that the missing man might be a Soviet spy, the feds dispatch top investigator Dave Levitan to track him down. Levitan discovers Koyne's secret biography, an astonishing story of a Jewish American life churned by global politics. Levitan's dogged hunt takes surprising turns, finally onto an ocean liner bound for France. The future of the nuclear world hangs on...