Italian Secret. Tara Moss. 2025.

Naples, 1943. Deep within a secret network of underground tunnels, a woman takes shelter from a wartime air raid and prays her husband will return safely.

Pacific Ocean, 1907. A young woman embarks on a lonely journey to begin a new life far from home.

Sydney, 1948. Billie Walker has recently reopened her late father's private inquiry office. But when cleaning out old filing cabinets she finds a dusty box - the contents of which just might upend everything Billie thought she knew about her beloved father.

Soon Billie is on the scent, uncovering the secrets of her family's past, travelling aboard the first postwar luxury passenger ship from Sydney to Naples in search of answers.

Billies father had an enemy - one who may now be stalking Billie around the world - and the closer Billie gets to the truth, the more danger she finds herself in. And as the trail leads her towards two women whose history is entwined with her own, she realises she is not the only one at risk.