Sarah Morgan is a successful and powerful defense attorney in Washington D.C. At 33 years old, she is a named partner at her firm and life is going exactly how she planned. The same cannot be said for her husband, Adam. He is a struggling writer who has had little success in his career. He begins to tire of his and Sarah’s relationship as she is constantly working. Out in the secluded woods, at Adam and Sarah’s second home, Adam engages in a passionate affair with Kelly Summers. Then, one morning everything changes. Adam is arrested for Kelly’s murder.

Samson and Beyah have nothing in common on the surface. She comes from a life of poverty and neglect; he comes from a family of wealth and privilege. But one thing they do have in common is that they're both drawn to sad things. Which means they're drawn to each other. Beyah and Samson agree to stay in the shallow end of a summer fling. What Beyah doesn't realize is that a rip current is coming, and it's about to drag her heart out to sea.

Isabel Gibson has all but perfected the art of forgetting. She’s a New Yorker now, with nothing left to tie her to Brinkley’s Island, Maine. Her parents are gone, the family bookstore is all but bankrupt, and her sister, Sophie, will probably never speak to her again. But when a mysterious letter arrives in her mailbox, Isabel feels herself drawn to the past. After years of fighting for her independence, she dreads the thought of going back to the island.

As one of the most popular influencers on social media, Mia Bell has lived her life online for years. With her celebrity dog and gorgeous fiancé, she is planning the ultimate virtual wedding - expensive, elaborate, and entirely paid for by sponsors. But off-camera, her world is far from picture perfect. After being jilted by her fiancé and faking her nuptials to please her sponsors, Mia finally has had enough. She heaves her phone off a cliff, ready to live - and maybe find love - offline for a change.

Ryland Grace is the sole survivor on a desperate, last-chance mission - and if he fails, humanity and the Earth itself will perish. Except that right now, he doesn't know that. He can't even remember his own name, let alone the nature of his assignment or how to complete it. All he knows is that he's been asleep for a very, very long time. And he's just been awakened to find himself millions of miles from home, with nothing but two corpses for company.