The Woman in the Villa: An utterly gripping psychological thriller with a heart-stopping twist

A holiday to Italy with my husband and his family should be a dream trip. Spending two weeks in the scorching sun, relaxing by the pool, sipping on local wine... When I meet Carmen, the woman staying in the villa next to us, I'm immediately drawn to her, thankful to have some normalcy against the intensity of my in laws. I didn't expect to tell her my biggest secret, one that could tear my whole life apart. But when I return the next day to beg Carmen not to tell a soul, the house is completely empty, and she is nowhere to be found. Who was the woman in the villa? Why was she there? Who have I told my darkest secret to...