An unexpected affair quickly escalates into a heart-stopping reality for two women whose passionate connection changes their lives forever.

How far can a father go to guarantee a world of happiness to his daughter? On the day when everything changes and the past emerges, a family adrift and its network of unlikely friends will be reunited in Lisbon. A Blue Lisbon, full of undoing knots.

In 1910 London, independent-minded Katharine Hilbery defies her family's expectations of marriage to pursue a career in astronomy. But when her father pressures her into an unwanted engagement, her resolve is tested. Through new friendships—including a bold suffragette and a thoughtful editor—Katharine begins to question the limits placed on her by society, love, and tradition, ultimately searching for a path that is truly her own.

Iconic model Justine gets entangled with the investigations of serial murders in the fashion scene, while her catwalk becomes a downward spiral of reality and illusion.