A Flurry for a Duke by Eliana Piers

A threatening note. Secrets and lies. And Hope in the middle…

Lady Hope has seven brothers who are all away on extended honeymoons for Christmas. So when an old friend catches her reading an ominous letter, the last thing she wants is to be protected by him: her brother’s best friend, a notorious rake. She’d rather be a spinster helping the world around her than just another useless, pretty trophy.
Independent Isaac, the Duke of Regium, refuses to accept care from anyone, especially his best friend’s little sister. So when he finds out she’s being threatened, he takes it upon himself to protect her from all danger. But when his bare body collides with hers, there might be a new danger at play.

Can Isaac lower his guard enough for Hope to care for him? Or will he stubbornly continue in his rakish ways?