Crimson Moon: White Wolf

White-wolf heir Selene is framed for treason by former fiancé Marcus and friend Vera on the eve of her coronation, wounded in their coup, and thrown into Moon Lake. Border captain Damon secretly saves her. Three months later, with her transformation suppressed but a new ability to sense lies, Selene returns under the name Luna. Working with Damon from inside and outside the regime, she uncovers the Redclaw family's century-long plan to seize the throne. Selene restores her royal blood in the lake, exposes Marcus before the tribunal, defeats the usurpers with Damon, and is crowned beneath the blood moon before renewing their mate bond.