Widow Mimi lives on idyllic Mackinac Island, where cars are not allowed and a Gibson martini with three onions at the witching hour is compulsory. Her estranged granddaughter, Addie, is getting over the heartbreak of not only being dumped by her fiancé, Brian, but also being cut out of the deal for the brilliantly successful video game Murderscape they invented together (with Addie doing most of the heavy lifting).

Jessamyn St. Germain is meant to be a star. Not an actor who occasionally books yogurt commercials and certainly not a lowly usher at one of Vancouver’s smallest regional theaters. No, she is bound for greatness, and that’s why the part of Maria in the theater’s upcoming production of The Sound of Music is hers. Or it’s going to be.

Jessamine Bricker loves a plan. Contingency plans and pros-and-cons lists are her love language, and because of that, her proposal planning business is thriving. But with rent costs rising at her office building, Jess jumps at the chance to plan a proposal between her snobby high school classmate, Diana, and her very wealthy boyfriend, Trenton Tillard…the Fourth.

Marcy Kendrick is a cop with a body count. A successful detective in LAPD Homicide, she is infamous for one thing: killing three serial killers before they could be brought to trial. Marcy knows her actions were in self-defense, but her coworkers can't help wondering if she is on some kind of vendetta—because Marcy's own mother was brutally murdered by a serial killer. Is this her way of getting payback? Adding to the pressure on Marcy, her ex-husband, Jordan Brasswell, has just been promoted over her, and seems determined to keep her under a microscope.

In between scouring estate sales for her new interior design business, Cottages by the Sea, Meg Barrett visits the swanky East Hampton home of her old college roommate, Jillian Spenser. But instead of seeing how the other half lives, she learns how the other half dies. Jillian's mother, known as the Queen Mother of the Hamptons, has been murdered. Someone has staged a coup.