Join Queen Victoria's eldest daughter and her husband, future German Emperor Frederick III in this third installment of The Rival Courts family saga, as they climb the treacherous path to their dream of German unification in the Franco-Prussian war of 1870.

In the calm after the storm, Vicky and Fritz have it all: a devoted marriage, a growing family, and the promise of a bright future. But Fritz's Uncle Karl lies in wait behind the scenes, hatching his newest plot. A shocking outcome of Vicky's Royal duties will bring fresh doubts to Fritz's heart, and his fatherhood.

As personal tragedy strikes and shakes them to their core, Fritz is forced to lead the largest battle history has ever seen. One which could change the face of Europe forever.

Vicky's best friend struggles to shield her daughters from the sinister force that seeks to control them. The youngest shares her grandfather's uncanny ability to know the truth behind others' motives. But can she see the truth in him? In such a dangerous world, what heroic role will this small child play?

Can they escape the danger and betrayal that lurks in every corner as they travel to the icy expanse of Russia, the peaceful Mediterranean shores, and the vast Eastern deserts?

Will Vicky and Fritz's love and marriage survive a mysterious illness, or will Uncle Karl's conspiracies tear them apart for good?

Fans of Clare McHugh's A Most English Princess, Mary Hart Perry's The Shadow Princess, and Daisy Goodwin's Victoria will be swept away by this gripping tale of love, war, and intrigue. With rich historical detail and deeply human struggles, Under the Sword, the third installment of The Rival Courts saga, brings to life the triumphs and tragedies in a fight against a nefarious trade which flourished in the shadows of the Royal court. A must-read for lovers of Victorian-era royal fiction.