The Bride Who Got Lucky by Janna MacGregor is Book Two in "The Cavensham Heiresses" series. This is the story of Nicholas St. Mauer and Lady Emma Cavensham. I have read the previous book but feel this is easily a standalone book.
Emma feels the lost of her good friend after her and passing. With this loss of her friend it has put Emma on a path to bring justice to the Husband of that friend. Emma is sure that he is responsible for her friend's death and also wants to protect any future innocent women from fall pray to him.
Nicholas lost his mother right after she gave birth to him..which his father never let him forget. Nicholas father sent him off to school around 5 years old and from there he jumped from school to school never forming any friendships. With Nicholas's father being so cold and horrible he never formed a bond or learned what love was....he just built walls to keep his emotions at away.
But with one kiss from Emma has put a small crack in one of his walls. But they are both very stubborn and end up butting heads through most of the book.