March 1920: Life has turned unsettlingly quiet for former British Intelligence agent Verity Kent and her husband, Sidney. .. .
And Verity, too, is called to investigate a Mystery .
The French authorities soon request Sidney\'s help with a suspect who claims to have proof of treason -- shortly before she is assassinated.
But even that false calm is about to end.
March 1920: Life has turned unsettlingly quiet for former British Intelligence agent Verity Kent and her husband, Sidney