Professor Kate Walker is a tenured, world-renowned engineer. She has a job she loves, a daughter she adores, and friends who've been with her through thick and thin. It's a fulfilling life that doesn't really need anything—or anyone—else. Especially not a charming, downright amazing woman who happens to be twenty years her junior.

Muffin maker Olivia Roberts has had it with her awful exes taking advantage of her good nature. The theft of her nana's beloved stuffed penguin is the absolute last straw. She puts up an ad at her local crime bookstore for a henchperson to help her enact a little mild revenge. To her astonishment, Margaret Blackwood, the mysterious, icy, and annoyingly opinionated bookstore owner, applies.

Natalie Keane is one of Hollywood’s top leading ladies, but she’s paid a steep price for her fame. After she was stalked eight years ago, the ensuing media frenzy almost broke her. So when a new threat arises, Natalie agrees to extra security, but she wants to keep it under wraps. The last thing she needs is another tabloid spectacle, especially during awards season.

Devon Douglas can’t believe it when she comes face-to-face with Sadie again. They were inseparable in high school until Devon did something she ruined their friendship on a lovestruck whim. Sadie is as dazzling as Devon remembers—and she can still hold her own surfing the wild waves of Clearwater Bay. Devon’s first priority is her five-year-old son, but getting to know Sadie all over again is taking up more and more of her headspace. Sadie is inexplicably drawn to Devon. It could be nostalgia. Or remnants of their old friendship flaring. But what if it’s more than that?

Her hit band Twice Struck topped the country music charts for almost a decade until her high-profile marriage to her bandmate and co-writer publicly exploded. Now she's fading from the spotlight and her own life, just trying to keep her head above water. Brynn Marshall is a little lost. Dropping out of med school made her the black sheep of the family and now she's floating around LA trying to find a sense of purpose. When she falls down on her luck, her best friend—indie musician Noah Lyman—refuses to let her wallow. After all, he's just got his big break: co-writing with a megastar!