The Perfect Couple by Elin Hilderbrand

On the morning of the wedding, maid of honor Merritt Monaco is found drowned at the Nantucket estate Summerland, owned by popular author Greer Garrison Winbury and her husband, Tag. Their younger son, Benji, was due to marry Celeste Otis in lavish nuptials that Greer had overseen and organized. With everyone in a state of shock, Chief of Police Ed Kapenash is treating the death as suspicious and goes about interviewing all the family members staying at the house. In The Perfect Couple, the reader follows the investigation and explores the backstories of the characters, leading up to the present time, most notably through the eyes of Greer, Celeste, and Celeste's mother, Karen, who is battling cancer. In this latest novel by Hilderbrand, she mixes it up a bit by having a murder frame the story, but it still contains all the elements that readers love about her novels--the setting, a focus on interpersonal relationships, and descriptions of the daily lives of wealthy islanders.