In this literate and action-packed historical thriller, set during World War II, a plucky code-breaker fights to keep a deadly secret as her Bonnie-and-Clyde past threatens to catch up with her.

Thirty-year-old Lena Stillman is living a perfectly respectable life when a shocking newspaper headline calls up her past: it concerns her former lover, charismatic bank robber Bill Bagley. A romantic and charming figure, Lena had tried to forget him by resuming her linguistic studies, which led to her recruitment as a Navy code-breaker intercepting Japanese messages during World War II.

But can Lena keep her own secrets? Threatening notes and the appearance of an old diary that recalls her gangster days are poised to upset her new life.

Whom can she really trust? Is there a spy among the code-breakers? And who is it that wants her dead?