Dorothy Sayers' Strong Poison
In the 6th Peter Wimsey book--the one which was most strongly recommended to me--Peter is determined to prove a young woman--a mystery writer!!--innocent of killing her ex. And then he's determined to marry her. I will say this mystery was way easier to solve for the reader than the previous ones, but it was still super satisfying, and I am very excited to see how things progress from here. A/A-.