THE #1 NEW YORK TIMES BESTSELLER FROM THE AUTHOR OF BIG LITTLE LIES. One of the Best Books of the Year--Entertainment Weekly One of the Top Ten Books of the Year--People magazine At the heart of The Husbands Secret is a letter thats not meant to be read. My darling Cecilia, if youre reading this, then Ive died... Imagine your husband wrote you a letter, to be opened after his death.