April Coutts-Cliveden was the first person Hannah Jones met at Oxford.

Vivacious, bright, occasionally vicious, and the ultimate It girl, she quickly pulled Hannah into her dazzling orbit. Together, they developed a group of devoted and inseparable friends—Will, Hugh, Ryan, and Emily—during their first term. By the end of the second, April was dead.

Now, a decade later, Hannah and Will are expecting their first child, and the man convicted of killing April, former Oxford porter John Neville, has died in prison. Relieved to have finally put the past behind her, Hannah’s world is rocked when a young journalist comes knocking and presents new evidence that Neville may have been innocent. As Hannah reconnects with old friends and delves deeper into the mystery of April’s death, she realizes that the friends she thought she knew all have something to hide…including a murder.

Lyla is in a bit of a rut. Her post-doctoral research has fizzled out, she's pretty sure they won't extend her contract, and things with her boyfriend, Nico, an aspiring actor, aren't going great. When the opportunity arises for Nico to join the cast of a new reality TV show, One Perfect Couple, she decides to try out with him. A whirlwind audition process later, Lyla find herself whisked off to a tropical paradise with Nico, boating through the Indian Ocean towards Ever After Island, where the two of them will compete against four other couples—Bayer and Angel, Dan and Santana, Joel and Romi, and Conor and Zana—in order to win a cash prize.

But not long after they arrive on the deserted island, things start to go wrong. After the first challenge leaves everyone rattled and angry, an overnight storm takes matters from bad to worse. Cut off from the mainland by miles of ocean, deprived of their phones, and unable to contact the crew that brought them there, the group must band together for survival. As tensions run high and fresh water runs low, Lyla finds that this game show is all too real—and the stakes are life or death.