An old family secret leads from the streets of Sydney to Italy's sun-drenched Neapolitan coast, in this immersive historical mystery from #1 international bestselling author Tara Moss Pacific Ocean, 1907. A girl embarks on a journey to begin a new life far from home. Naples, 1943. A woman shelters underground from a wartime air raid, praying her husband will return home. Sydney, 1948. Billie Walker, returned from a stint as a wartime investigative journalist, uncovers a dusty box in her father's old office whose contents--correspondence with a woman on the other side of the world--just might explain how they all are connected. Plunged into a perilous search that will take her onto the first postwar luxury passenger ship to sail across the ocean to Italy, Billie finds herself up against a dangerous adversary--someone with a mysterious grudge against her family--as she races to uncover the secrets her father left behind. And as the trail leads her towards two women whose histories may be entwined with her own, she realizes that her father's Italian secret just might upend everything she thought she knew.