GLOBE AND MAIL BESTSELLERNEW YORK TIMES BESTSELLERNEW YORK TIMES EDITORS' CHOICEMalibu 1983. Four famous siblings throw an epic party to celebrate the end of the summer. But over the course of one night, each of their lives will be changed forever.It's the day of Nina Riva's annual end-of-summer party, and anticipation is at a fever pitch. Everyone wants to be around the famous Rivas: Nina, the talented surfer and supermodel; brothers Jay and Hud, one a championship surfer