Emily and Josephine have always shared everything. They're sisters, flatmates, and best friends. It's the two of them against the world.

When Emily has the perfect wedding, and Josephine finds the perfect man, they know things will change forever. But nothing can prepare them for what, or who, one of them is willing to give up for love.

Four people. Three couples. Two sisters. One unforgivable betrayal.

From the best-selling author of Missing Pieces comes a heart-wrenching story about family, loyalty, and obsession that will have you racing to the finish.

ADVANCE PRAISE FOR NOBODY'S WIFE

'It's astonishingly good. Breathtaking assured writing and a deftly told story about sisters and love with characters I can't stop thinking about. Utterly sublime.' - Clare Empson, author of Him

'I felt every moment of this book. It was beautifully written, acutely observed, and utterly addictive. . . this is just stunning. I devoured it in twenty-four hours, and highly recommend.' - Louise Beech, author of The Lion Tamer Who Lost

'a beautifully crafted and deeply honest story of marriage and love.' - Lauren North, author of The Perfect Betrayal