3.5 - 4 Stars 
 One of my favorite writing duos! I have read several of the Merikan sisters' M/M and M/F books and they never disappoint. This book, which could read as a standalone, is a side story to Seth and Dom's story. But if you have not yet read the other Guns 'n Boys books, get them!! They are totally addictive! 
 Lucrezia is promised to Seth in marriage by her father. Even though she is very young and naive, she dutifully goes along with her father's plan. Until of course she meets Santo, who is tasked with escorting her safely to meet her future husband. 
 Santo and Lucrezia are HOT but their relationship is completely forbidden. Each one of their encounters is laced with danger. I definitely want to read more about Santo: he could have an entire book written just from his point of view! Handsome, dominating and smart, Lucrezia can't resist him. 
 This is without a doubt a violent mafia romance but yet it is not quite as bloody or strange as some of the books I've read by this duo. Lucrezia is almost an old-fashioned woman, from the way she dresses to her speech to her mannerisms. And even though Santo lives in a world of constant violence, he was sexy and romantic and almost tender with the beautiful Lucrezia. 
 'Blood & Marriage' is a super fast-paced and spicy read, with all of the trademark sexual tension and wonderfully descriptive writing I have come to expect from Miss Merikan. A great addition to a wonderful series. 
 (ARC provided in return for an honest review)