THE NUMBER ONE NEW YORK TIMES BESTSELLER 'Enough betrayal, vengeance and sex to read like one of the Greek tragedies' Observer 'Devastatingly good' Guardian 'Astonishingly beautiful' Financial Times 'Addictive to read' Stylist 'Rich, lyrical and rewarding' Paula Hawkins Every story has two sides. Every relationship has two perspectives. And sometimes, it turns out, the key to a great marriage is not its truths but its secrets. 'Groff is a writer of rare gifts' New York Times 'Sexy and achingly beautiful' Good Housekeeping 'A really powerful novel' Barack Obama 'A book to submit to and be knocked out by' Meg Wolitzer