Tully and Rachel find themselves thrown for a loop when their father announces he is divorcing their mother with dementia and marrying a woman younger than both of them. As they dig deeper into Heather's secrets and confront their own issues, comments from their mother make them suspect that their parents' marriage may not have been as idyllic as they thought. Knowing the wedding will end in blood, The Younger Wife is an addictive domestic thriller that keeps you engaged as you play amateur detective, judging the reliability of the narrators and deciding who you think is guilty. 

I received a complimentary copy of this book from St. Martin's Press through NetGalley. Opinions expressed in this review are completely my own.