Secrets of an Accidental Duchess (Donovan‪)‬

With her pale hair and slim figure, Olivia Donovan looks as fragile as
fine china, and has been treated as such by her sisters ever since a
childhood bout with malaria. But beneath her delicate facade, Olivia
guards a bold, independent spirit and the kind of passionate desires
proper young ladies must never confess...

It was a reckless
wager, and one Max couldn't resist: seduce the alluring Olivia or
forfeit part of his fortune. Yet the wild, soon-to-be Duke never
imagined he'd fall in love with this innocent beauty. Nor could he have
guessed that a dangerously unpredictable rival would set out to destroy
them both. Now, Max must beat a Madman at his own twisted game—or
forever lose the only woman to have ever won his heart.