As the child of a Hooters waitress and an ex-pro wrestler, Margo Millet's always known she’d have to make it on her own. So she enrolls at her local junior college, even though she can’t imagine how she’ll ever make a living. She’s still figuring things out and never planned to have an affair with her English professor—and while the affair is brief, it isn’t brief enough to keep her from getting pregnant. Despite everyone’s advice, she decides to keep the baby, mostly out of naiveté and a yearning for something bigger.

Julia Ames, after a youth marked by upheaval and emotional turbulence, has found herself on the placid plateau of mid-life. But Julia has never navigated the world with the equanimity of her current privileged class. Having nearly derailed herself several times, making desperate bids for the kind of connection that always felt inaccessible to her, she finally feels, at age fifty seven, that she has a firm handle on things. She’s unprepared, though, for what comes next.

When Lydia takes a job running the Senior Citizens’ Social Club three afternoons a week, she assumes she’ll be spending her time drinking tea and playing gentle games of cards. The members of the Social Club, however, are not at all what Lydia was expecting. From Art, a failed actor turned kleptomaniac to Daphne, who has been hiding from her dark past for decades to Ruby, a Banksy-style knitter who gets revenge in yarn, these seniors look deceptively benign—but when age makes you invisible, secrets are so much easier to hide.

Claire has a problem with setting limits. All her life she has taken on every responsibility, assumed every burden, granted every request. Claire wants it all—and in the eyes of her friends, she has it: a devoted husband, four beautiful children, even a successful career as an artist. So when she agrees to chair the committee for Nantucket's social event of the year, she knows she can handle it. Claire can handle anything. But when planning the gala propels her into the orbit of billionaire Lock Dixon, unexpected sparks begin to fly.

Every day Iona, a larger-than-life magazine advice columnist, travels the ten stops from Hampton Court to Waterloo Station by train, accompanied by her dog, Lulu. Every day she sees the same people, whom she knows only by nickname: Impossibly-Pretty-Constant-Reader and Terribly-Lonely-Teenager. Of course, they never speak. Seasoned commuters never do. Then one morning, the man she calls Smart-But-Sexist-Manspreader chokes on a grape right in front of her. He’d have died were it not for the timely intervention of Sanjay, a nurse, who gives him the Heimlich maneuver.