FROM THE SUNDAY TIMES BESTSELLING AUTHOR OF OUR HOUSE AND THOSE PEOPLE

Even an act of heroism has consequences...

On a perfect summer's day in Paris, tourists on the river watch in shock as a small boy falls into the Seine and disappears below the surface. As his mother stands frozen, a stranger takes a breath and leaps . . .

'A master of her craft' Rosamund Lupton

'I honestly didn't see the twist coming. Perfect.' Jojo Moyes